Reptiles are a cold-blooded vertebrate animal class that regularly sheds their outer layer of skin, yet are also very similar to birds (in fact, the crocodile is more closely related to a bird than to a lizard). Reptiles are not as old as fish, with the earliest reptile on record emerging 315 million years ago, but they were the dominant class during the Mesozoic age until the extinction of the dinosaurs. Like birds, reptiles are an air-breathing class with many of its species laying eggs instead of giving birth to live young. In fact, out of all the reptiles, the only species to give birth to live young are boas and pythons. Being cold-blooded without the ability to regulate their internal temperature, Reptiles become inactive during the cooler times of the year.

What do reptiles eat?

Reptiles are typically carnivores and feed on eating other animals like insects, mollusks, birds, frogs, mammals, fishes, or sometimes other reptiles. Some reptile species like land tortoises are vegetarians and eat leaves, grass, or cactus while the marine iguana dives into the sea to obtain seaweed for consumption.

Why do reptiles shed?

Reptiles shed their skin so that they can continue to grow. When they shed, reptiles grow a new layer of skin underneath their old skin and then shed their old one. When they shed their skin reptiles also get rid of any parasites during the process. The process of shedding is referred to as sloughing.

When did reptiles first appear?

Reptiles first appeared 315 million years ago during the time period known as the Late Carboniferous Period. This time period is also referred to as the Pennsylvanian and the Coal Age. The first reptile is considered to be the Hylonomus lyelli and is also the first animal known to have fully adapted to life on land.

Reptiles Guides
Browse through our curated Reptiles Guides for additional categorizations, tips, details, variations, styles, and histories of Reptiles. Guides provide additional insights into the unique properties and shared relationships between elements.
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10.2”-13” | 26-33 cm
18.5”-24.4” | 47-62 cm (Carapace)
22”-29” | 56-74 cm (Carapace)
176-251 lb | 80-114 kg
11-45 years (wild); 20-70 years (captivity)
Alligator Snapping Turtle
33.000
62.000
74.000
114.000
70.00
93700
GUIDE
3D
Alligator Snapping Turtle
9.5’-16.1’ | 2.9-4.9 m
3.3’-5.25’ | 1-1.6 m
26’-43’ | 7.9-13.1 m
3,300-5,070 lb | 1,497-2,300 kg
25-30 years
Allosaurus
490.000
160.000
1310.000
2300.000
30.00
199000
GUIDE
3D
Allosaurus
7’-8.2’ | 2.15-2.5 m
3.4’-4.4’ | 1.05-1.35 m
30’-33' | 9.14-10 m
5,700-6,600 lb | 2,585-2,994 kg
25-35 years
Amargasaurus
250.000
135.000
1000.000
2994.000
35.00
32000
GUIDE
3D
Amargasaurus
16.9”-26” | 43-66 cm
17.7”-27.2” | 45-69 cm
9.8’-15’ | 3-4.6 m
265-1,235 lb | 120-560 kg
30-75 years
American Alligator
66.000
69.000
460.000
560.000
75.00
46800
GUIDE
3D
American Alligator
20.9”-32.3” | 53-82 cm
24.4”-36.6” | 62-93 cm
13.1’-20’ | 4-6.1 m
882-2,006 lb | 400-910 kg
50-70 years
American Crocodile
82.000
93.000
610.000
910.000
70.00
28400
GUIDE
3D
American Crocodile
5'6" | 1.67 m
16' | 4.85 m
Ankylosaurus
167.000
485.000
66000
GUIDE
3D
Ankylosaurus
17.1’-18.7’ | 5.2-5.7 m
6.9’-7.5’ | 2.1-2.3 m
69’-75’ | 21-23 m
36,000-49,000 lb | 16,330-22,226 kg
70-100 years
Apatosaurus
570.000
230.000
2300.000
22226.000
100.00
87000
GUIDE
3D
Apatosaurus
5.5”-7.1” | 14-18 cm
1.4”-2” | 3.5-5 cm
1.3’-1.6’ | .4-.5 m
1.8-2.2 lb | .82-1 kg
Archaeopteryx
18.000
5.000
50.000
1.000
175000
GUIDE
3D
Archaeopteryx
39.4’-45.9’ | 12-14 m
12.5’-14.8’ | 3.8-4.5 m
98’-115’ | 30-35 m
110,000-220,000 lb | 49,895-99,790 kg
35-45 years
Argentinosaurus
1400.000
450.000
3500.000
99790.000
45.00
114000
GUIDE
3D
Argentinosaurus
.39”-.55” | 1-1.4 cm
.6”-.8” | 1.5-2 cm
3”-3.5” | 7.5-9 cm
1.8-3.5 oz | 50-100 g
10-25 years
Armadillo Lizard
1.400
2.000
9.000
0.100
25.00
53600
GUIDE
3D
Armadillo Lizard
3.15”-5.9” | 8-15 cm
6.5’-12’ | 1.98-3.66 m
6.6-11 lb | 3-5 kg
12-18 years
Atlantic Bushmaster
15.000
366.000
5.000
18.00
3205
GUIDE
3D
Atlantic Bushmaster
1.2”-2.75” | 3-7 cm
2’-5’ | .61-1.52 m
2.6-6.6 lb | 1.2-3 kg
30-50 years
Ball Python
7.000
152.000
3.000
50.00
227400
GUIDE
3D
Ball Python
22.8”-26.8” | 58-68 cm
29.5”-35.4” | 75-90 cm
16.4’-19.7’ | 5-6 m
209-882 lb | 95-400 kg
30-80 years
Black Caiman
68.000
90.000
600.000
400.000
80.00
21000
GUIDE
3D
Black Caiman
2”-3.9” | 5-10 cm
6.5’-14’ | 1.98-4.27 m
2.2-3.5 lb | 1-1.6 kg
10-20 years
Black Mamba
10.000
427.000
1.600
20.00
437350
GUIDE
3D
Black Mamba
4.37”-6.5” | 11.1-16.5 cm
3.94”-5.91” | 10-15 cm
40”-60” | 101.6-152.4 cm
25-31 lb | 11-14 kg
25-69 years
Blue Iguana
16.500
15.000
152.400
14.000
69.00
34600
GUIDE
3D
Blue Iguana
1.4”-1.73” | 3.5-4.4 cm
2.36”-2.75” | 6-7 cm (Carapace)
3”-3.5” | 7.6-8.9 cm (Carapace)
.2-.24 lb | .09-.11 kg
20-30 years (wild); 40-60 years (captivity)
Bog Turtle
4.400
7.000
8.900
0.110
60.00
8350
GUIDE
3D
Bog Turtle
41’-49.2’ | 12.5-15 m (Overall)
10.2’-12.5’ | 3.1-3.8 m
59’-72.2’ | 18-22 m
62,400-103,400 lb | 28,300-46,900 kg
80-100 years
Brachiosaurus
1500.000
380.000
2200.000
46900.000
100.00
291000
GUIDE
3D
Brachiosaurus
26.6’-28.9’ | 8.1-8.8 m
6.6’-7.4’ | 2-2.25 m
69’-75’ | 21-23 m
34,000-50,000 lb | 15,422-22,680 kg
80-100 years
Brontosaurus
880.000
225.000
2300.000
22680.000
100.00
213000
GUIDE
3D
Brontosaurus
3.5”-8.7” | 9-22 cm
8’-26’ | 2.44-7.92 m
15-165 lb | 6.8-75 kg
20-28 years
Burmese Python
22.000
792.000
75.000
28.00
72500
GUIDE
3D
Burmese Python
1.2”-2” | 3-5 cm
3’-6.5’ | .91-1.98 m
1-3.3 lb | .45-1.5 kg
10-20 years
California Kingsnake
5.000
198.000
1.500
20.00
16400
GUIDE
3D
California Kingsnake
1.6”-3.15” | 4-8 cm
6.5’-10’ | 1.98-3.05 m
26.4-33 lb | 12-15 kg
15-30 years
Carpet Python
8.000
305.000
15.000
30.00
27200
GUIDE
3D
Carpet Python
6.3”-9.1” | 16-23 cm
8.3”-11.4” | 21-29 cm
5’-7’ | 1.5-2.1 m
176-220 lb | 80-100 kg
30-70 years
Chinese Alligator
23.000
29.000
210.000
100.000
70.00
13500
GUIDE
3D
Chinese Alligator
3’-4.3’ | .9-1.3 m
6.3”-10.2” | 16-26 cm
6.6’-9.8’ | 2-3 m
33-55 lb | 15-25 kg
Coelophysis
130.000
26.000
300.000
25.000
22000
GUIDE
3D
Coelophysis
.35”-.71” | .9-1.8 cm
.4”-.83” | 1-2.1 cm
3”-5.9” | 7.5-15 cm
1.6-2.5 oz | 45-70 g
3-8 years
Common House Gecko
1.800
2.100
15.000
0.070
8.00
136000
GUIDE
3D
Common House Gecko
.71”-1.1” | 1.8-2.8 cm
.98”-1.38” | 2.5-3.5 cm
7.1”-11” | 18-28 cm
1.6-3 oz | 45-85 g
10-20 years
Common Leopard Gecko
2.800
3.500
28.000
0.085
20.00
300000
GUIDE
3D
Common Leopard Gecko
3.75”-7.1” | 9.5-18 cm
6.3”-11.4” | 16-29 cm (Carapace)
8”-14” | 20.3-35.6 cm (Carapace)
11-44 lb | 5-20 kg
30-45 years (wild); 30-70 years (captivity)
Common Snapping Turtle
18.000
29.000
35.600
20.000
70.00
198000
GUIDE
3D
Common Snapping Turtle
1.2”-2” | 3-5 cm
24”-40” | .61-1.02 m
.22-.77 lb | .1-.35 kg
10-30 years
Copperhead
5.000
102.000
0.350
30.00
227700
GUIDE
3D
Copperhead
.6”-1.4” | 1.5-3.5 cm
2’-6’ | .61-1.83 m
1-2 lb | .45-.9 kg
10-23 years
Corn Snake
3.500
183.000
0.900
23.00
255000
GUIDE
3D
Corn Snake
15.1’-17.4’ | 4.6-5.3 m
3.3’-3.9’ | 1-1.2 m
30’-33' | 9.14-10 m
6,000-11,000 lb | 2,722-4,990 kg
60-70 years
Corythosaurus
530.000
120.000
1000.000
4990.000
70.00
18000
GUIDE
3D
Corythosaurus
.67”-1.06” | 1.7-2.7 cm
.79”-1.34” | 2-3.4 cm
5.9”-9.8” | 15-25 cm
1.2-1.9 oz | 35-55 g
5-20 years
Crested Gecko
2.700
3.400
25.000
0.055
20.00
139300
GUIDE
3D
Crested Gecko
8.7”-9.4” | 22-24 cm
12.6”-13.8” | 32-35 cm
7’-7.5’ | 2.1-2.3 m
154-176 lb | 70-80 kg
50-75 years
Cuban Crocodile
24.000
35.000
230.000
80.000
75.00
6750
GUIDE
3D
Cuban Crocodile
2.8’-4.75’ | .85-1.45 m
9.4”-16.5” | 24-42 cm
9’-16’ | 2.74-4.88 m
160-220 lb | 73-100 kg
Deinonychus
145.000
42.000
488.000
100.000
99000
GUIDE
3D
Deinonychus
1.1”-1.73” | 2.8-4.4 cm
1.06”-1.65” | 2.7-4.2 cm
10”-16” | 25.4-40.6 cm
2-3 oz | 57-85 g
7-14 years
Desert Iguana
4.400
4.200
40.600
0.085
14.00
6300
GUIDE
3D
Desert Iguana
5.7’-7.4’ | 1.75-2.25 m
15.75”-23.6” | 40-60 cm
16’-20’ | 4.88-6.1 m
650-1,000 lb | 295-454 kg
Dilophosaurus
225.000
60.000
610.000
454.000
167000
GUIDE
3D
Dilophosaurus
26.6’-28.9’ | 8.1-8.8 m
6.1’-6.6’ | 1.85-2 m
80’-85’ | 24.4-26 m
60,000-160,000 lb | 27,215-72,575 kg
70-80 years
Diplodocus
880.000
200.000
2600.000
72575.000
80.00
240000
GUIDE
3D
Diplodocus
1.97”-2.4” | 5-6.1 cm
3”-3.62” | 7.6-9.2 cm
20”-24” | 50.8-61 cm
.8-1.2 lb | .38-.55 kg
6-18 years
Eastern Bearded Dragon
6.100
9.200
61.000
0.550
18.00
5100
GUIDE
3D
Eastern Bearded Dragon
1”-1.4” | 2.5-3.5 cm
3.5’-6’ | 1.07-1.83 m
1.1-4.9 lb | .5-2.2 kg
10-34 years
Eastern Black Rat Snake
3.500
183.000
2.200
34.00
1200
GUIDE
3D
Eastern Black Rat Snake
2”-3.9” | 5-10 cm
6.5’-14’ | 1.98-4.27 m
2.2-3.3 lb | 1-1.5 kg
12-19 years
Eastern Green Mamba
10.000
427.000
1.500
19.00
3950
GUIDE
3D
Eastern Green Mamba
1.8”-2.75” | 4.5-7 cm
4’-6’ | 1.22-1.83 m
.9-2 lb | .4-.9 kg
15-20 years
Emerald Tree Boa
7.000
183.000
0.900
20.00
30100
GUIDE
3D
Emerald Tree Boa
26.8”-34.3” | 68-87 cm
27.2”-33.9” | 69-86 cm
13.1’-16.4’ | 4-5 m
198-463 lb | 90-210 kg
30-80 years
False Gharial
87.000
86.000
500.000
210.000
80.00
8350
GUIDE
3D
False Gharial
14.2”-17.3” | 36-44 cm
27.5”-33” | 70-84 cm (Carapace)
31”-37” | 79-94 cm (Carapace)
154-198 lb | 70-90 kg
40-60 years (wild); 50-100 years (captivity)
Flatback Sea Turtle
44.000
84.000
94.000
90.000
100.00
2150
GUIDE
3D
Flatback Sea Turtle
9.4”-13.8” | 24-35 cm
11”-16.5” | 28-42 cm
5’-9.8’ | 2.1-3 m
88-220 lb | 40-100 kg
40-100 years
Freshwater Crocodile
35.000
42.000
300.000
100.000
100.00
7800
GUIDE
3D
Freshwater Crocodile
3.7”-4.9” | 9.5-12.5 cm
4’-6’ | 1.22-1.83 m
17.6-24.3 lb | 8-11 kg
13-20 years
Gaboon Viper
12.500
183.000
11.000
20.00
140400
GUIDE
3D
Gaboon Viper
7.2’-11.2’ | 2.2-3.4 m
18.5”-28.3” | 47-72 cm
13’-20’ | 3.96-6.1 m
500-970 lb | 227-440 kg
10-20 years
Gallimimus
340.000
72.000
610.000
440.000
20.00
52000
GUIDE
3D
Gallimimus
27.0”-36.0” | 69-91 cm
48.0”-60.0” | 122-152 cm
330-550 lb | 150-250 kg
100-150 (wild), 175 (captivity)
Galápagos Giant Tortoise
91.000
152.000
250.000
175.00
1100
GUIDE
3D
Galápagos Giant Tortoise
Gharial
109000
11.8”-14.6” | 30-37 cm
16.1”-20.1” | 41-51 cm
12’-15’ | 3.7-4.6 m
353-397 lb | 160-180 kg
40-60 years
Gharial
37.000
51.000
460.000
180.000
60.00
109000
GUIDE
3D
Gharial
3.5”-7.9” | 9-20 cm
10’-30’ | 3.05-9.14 m
100-550 lb | 45-250 kg
10-32 years
Green Anaconda
20.000
914.000
250.000
32.00
77400
GUIDE
3D
Green Anaconda
.35”-.83” | .9-2.1 cm
.31”-.71” | .8-1.8 cm
4”-9” | 10.2-22.9 cm
.07-.21 oz | 2-6 g
3-8 years
Green Anole
2.100
1.800
22.900
0.006
8.00
65000
GUIDE
3D
Green Anole
2.2”-4.45” | 5.6-11.3 cm
2.24”-4.49” | 5.7-11.4 cm
18”-36” | 46-91 cm
7-17.6 oz | .2-.5 kg
5-10 years
Green Basilisk
11.300
11.400
91.000
0.500
10.00
4900
GUIDE
3D
Green Basilisk
1.46”-2.05” | 3.7-5.2 cm
1.18”-1.69” | 3-4.3 cm
12”-17” | 30.5-43.2 cm
2.6-8.8 lb | 1.2-4 kg
12-25 years
Green Iguana
5.200
4.300
43.200
4.000
25.00
42000
GUIDE
3D
Green Iguana
14.2”-18.9” | 36-48 cm
27.5”-36.2” | 70-92 cm (Carapace)
36”-48” | 91-122 cm (Carapace)
243-419 lb | 110-190 kg
60-75 years (wild); 80-120 years (captivity)
Green Sea Turtle
48.000
92.000
122.000
190.000
120.00
46700
GUIDE
3D
Green Sea Turtle
1.6”-2.4” | 4-6 cm
5’-6.5’ | 1.52-1.98 m
2.4-3.5 lb | 1.1-1.6 kg
12-20 years
Green Tree Python
6.000
198.000
1.600
20.00
58000
GUIDE
3D
Green Tree Python
9.4”-15” | 24-38 cm
17.7”-27.2” | 45-69 cm (Carapace)
24”-36” | 61-91 cm (Carapace)
99-198 lb | 45-90 kg
30-45 years (wild); 30-60 years (captivity)
Hawksbill Sea Turtle
38.000
69.000
91.000
90.000
60.00
15400
GUIDE
3D
Hawksbill Sea Turtle
11.5’-15.75’ | 3.5-4.8 m
3.9’-5.25’ | 1.2-1.6 m
29.5’-39.4’ | 9-12 m
8,000-11,000 lb | 3,629-4,990 kg
25-40 years
Iguanodon
480.000
160.000
1200.000
4990.000
40.00
85000
GUIDE
3D
Iguanodon
1”-1.4” | 2.5-3.5 cm
3.5’-5’ | 1.07-1.52 m
4.4-6.6 lb | 2-3 kg
24-32 years
Indian Cobra
3.500
152.000
3.000
32.00
38100
GUIDE
3D
Indian Cobra
3”-3.9” | 7.5-10 cm
6’-9’ | 1.83-2.74 m
2.2-4.4 lb | 1-2 kg
10-20 years
Inland Taipan
10.000
274.000
2.000
20.00
79900
GUIDE
3D
Inland Taipan
3.15”-5.5” | 8-14 cm
10’-18’ | 3.05-5.49 m
11-15 lb | 5-6.8 kg
15-23 years
King Cobra
14.000
549.000
6.800
23.00
353900
GUIDE
3D
King Cobra
14.17”-17.72” | 36-45 cm
13.78”-17.32” | 35-44 cm
8’-10’ | 2.43-3.05 m
150-300 lb | 68-136 kg
10-30 years
Komodo Dragon
45.000
44.000
305.000
136.000
30.00
452200
GUIDE
3D
Komodo Dragon
14.4’-19.4’ | 4.4-5.9 m
4.6’-6.6’ | 1.4-2 m
29.5’-39.4’ | 9-12 m
8,000-11,200 lb | 3,629-5,080 kg
25-30 years
Lambeosaurus
590.000
200.000
1200.000
5080.000
30.00
13000
GUIDE
3D
Lambeosaurus
12.6”-18.1” | 32-46 cm
24”-33.5” | 61-85 cm (Carapace)
30”-42” | 76-107 cm (Carapace)
154-375 lb | 70-170 kg
45-60 years (wild); 50-77 years (captivity)
Loggerhead Sea Turtle
46.000
85.000
107.000
170.000
77.00
43000
GUIDE
3D
Loggerhead Sea Turtle
8.2’-9.2’ | 2.5-2.8 m
3.3’-3.9’ | 1-1.2 m
26.2’-29.5’ | 8-9 m
5,600-10,000 lb | 2,540-4,536 kg
Maiasaura
280.000
120.000
900.000
4536.000
25000
GUIDE
3D
Maiasaura
20.3’-37.4’ | 6.2-11.4 m
5.25’-9.8’ | 1.6-3 m
49.2’-85.3’ | 15-26 m
60,000-176,000 lb | 27,216-79,832 kg
35-45 years
Mamenchisaurus
1140.000
300.000
2600.000
79832.000
45.00
15000
GUIDE
3D
Mamenchisaurus
.63”-1.26” | 1.6-3.2 cm
.67”-1.3” | 1.7-3.3 cm
6”-12” | 15.2-30.5 cm
.7-3 oz | 20-85 g
10-20 years
Mexican Alligator Lizard
3.200
3.300
30.500
0.085
20.00
11600
GUIDE
3D
Mexican Alligator Lizard
16.9”-12.3” | 43-54 cm
23.2”-29.1” | 59-74 cm
13.1’-16.4’ | 4-5 m
992-1,543 lb | 450-700 kg
30-44 years
Mugger Crocodile
54.000
74.000
500.000
700.000
44.00
8800
GUIDE
3D
Mugger Crocodile
12.6”-19.3” | 32-49 cm
17.3”-27.2” | 44-69 cm
9.5’-14.4’ | 2.9-4.4 m
496-1,102 lb | 225-500 kg
50-80 years
Nile Crocodile
49.000
69.000
440.000
500.000
80.00
57000
GUIDE
3D
Nile Crocodile
12.2”-24.4” | 31-62 cm
18.1”-36.6” | 46-93 cm
9.8’-19.7’ | 3-6 m
496-838 lb | 225-380 kg
60-80 years
Orinoco Crocodile
62.000
93.000
600.000
380.000
80.00
4700
GUIDE
3D
Orinoco Crocodile
6.4’-7.1’ | 1.95-2.15 m
19.7”-27.6” | 50-70 cm
11.5’-12.5’ | 3.5-3.8 m
220-370 lb | 100-168 kg
Ornithomimus
215.000
70.000
380.000
168.000
11000
GUIDE
3D
Ornithomimus
4.3’-7.2’ | 1.3-2.2 m
19.7”-33.5” | 50-85 cm
9.8’-16.4’ | 3-5 m
815-992 lb | 370-450 kg
Pachycephalosaurus
220.000
85.000
500.000
450.000
101000
GUIDE
3D
Pachycephalosaurus
2.44”-3.78” | 6.2-9.6 cm
1.89”-3” | 4.8-7.6 cm
13”-20” | 33-50.8 cm
2.1-6.3 oz | 60-180 g
3-7 years
Panther Chameleon
9.600
7.600
50.800
0.180
7.00
53200
GUIDE
3D
Panther Chameleon
14.4’-18.4’ | 4.4-5.6 m
3.9’-4.9’ | 1.2-1.5 m
29.5’-36’ | 9-11 m
6,000-8,000 lb | 2,722-3,629 kg
55-70 years
Parasaurolophus
560.000
150.000
1100.000
3629.000
70.00
101000
GUIDE
3D
Parasaurolophus
11.5' | 3.5 m
46' | 14 m
Plesiosaurus
350.000
1400.000
14000
GUIDE
3D
Plesiosaurus
19.7”-23.6” | 50-60 cm
13.8”-19.7” | 35-50 cm
4.9’-5.9’ | 1.5-1.8 m
350-400 lb | 159-181 kg
Protoceratops
60.000
50.000
180.000
181.000
29000
GUIDE
3D
Protoceratops
19.5' | 6 m
6' | 1.83 m
Pterodactyl
600.000
183.000
116000
GUIDE
3D
Pterodactyl
2.4”-5.9” | 6-15 cm
5’-21’ | 1.52-6.4 m
165-385 lb | 75-175 kg
15-30 years
Reticulated Python
15.000
640.000
175.000
30.00
75800
GUIDE
3D
Reticulated Python
2.95”-8.46” | 7.5-21.5 cm
1.89”-5.31” | 4.8-13.5 cm
20”-54” | 50.8-137 cm
10-20 lb | 4.5-9 kg
10-20 years
Rhino Iguana
21.500
13.500
137.000
9.000
20.00
7800
GUIDE
3D
Rhino Iguana
.4”-.8” | 1-2 cm
16”-38” | 41-97 cm
2.2-3.3 lb | 1-1.5 kg
9-11 years
Ribbon Snake
2.000
97.000
1.500
11.00
21005
GUIDE
3D
Ribbon Snake
.6”-1.2” | 1.5-3 cm
17”-36” | 43-91 cm
.8-1 lb | .36-.45 kg
18-31 years
Rosy Boa
3.000
91.000
0.450
31.00
25030
GUIDE
3D
Rosy Boa
.4”-.6” | 1-1.5 cm
22”-32” | 56-81 cm
.03-.07 lb | 15-30 g
5-15 years
Rough Green Snake
1.500
81.000
0.030
15.00
13300
GUIDE
3D
Rough Green Snake
9.8”-29.5” | 25-75 cm
13.8”-41.3” | 35-105 cm
7.5’-23’ | 2.3-7 m
180-2200 lb | 82-1000 kg
70-100 years (wild); 100-120 years (captivity)
Saltwater Crocodile
75.000
105.000
700.000
1000.000
120.00
31000
GUIDE
3D
Saltwater Crocodile
6.73”-8.3” | 17.1-21.1 cm
6.14”-7.48” | 15.6-19 cm
4’-5’ | 122-152 cm
11-13.2 lb | 5-6 kg
8-20 years
Savannah Monitor
21.100
19.000
152.400
6.000
20.00
35300
GUIDE
3D
Savannah Monitor
5.5”-11.8” | 14-30 cm
5.9”-13.8” | 15-35 cm
3.6’-8.2’ | 1.1-2.5 m
30-132 lb | 14-60 kg
30-70 years
Spectacled Caiman
30.000
35.000
250.000
60.000
70.00
6800
GUIDE
3D
Spectacled Caiman
20’-25.6’ | 6.1-7.8 m (Overall)
5.25’-6.9’ | 1.6-2.1 m
46’-59’ | 14-18 m
14,100-16,300 lb | 6,400-7,400 kg
25-30 years
Spinosaurus
780.000
210.000
1800.000
7400.000
30.00
507000
GUIDE
3D
Spinosaurus
10.8’-14.8’ | 3.3-4.5 m (Overall)
3.9’-5.9’ | 1.2-1.8 m
21.3’-30’ | 6.5-9.1 m
6,800-8,400 lb | 3,100-3,800 kg
75-100 years
Stegosaurus
450.000
180.000
910.000
3800.000
100.00
392000
GUIDE
3D
Stegosaurus
7.2’-8.9’ | 2.2-2.7 m
3.6’-4.3’ | 1.1-1.3 m
16.4’-19.7’ | 5-6 m
5,400-6,000 lb | 2,450-2,722 kg
35-45 years
Styracosaurus
270.000
130.000
600.000
2722.000
45.00
39000
GUIDE
3D
Styracosaurus
.4”-1” | 1-2.5 cm
2’-4’ | .61-1.22 m
2-5 lb | .9-2.3 kg
7-15 years
Texas Coral Snake
2.500
122.000
2.300
15.00
7700
GUIDE
3D
Texas Coral Snake
1.6’-3.3’ | .5-1 m
5.9”-11.8” | 15-30 cm
3.9’-8.2’ | 1.2-2.5 m
24-49 lb | 11-22 kg
Thecodontosaurus
100.000
30.000
250.000
22.000
1500
GUIDE
3D
Thecodontosaurus
1.26”-1.69” | 3.2-4.3 cm
1.61”-2.4” | 4.1-6.1 cm
6”-8.5” | 15.2-21.6 cm
1.8-3.4 oz | 50-95 g
12-20 years
Thorny Dragon
4.300
6.100
21.600
0.095
20.00
7700
GUIDE
3D
Thorny Dragon
.59”-1.38” | 1.5-3.5 cm
.83”-1.65” | 2.1-4.2 cm
8”-16” | 20.3-40.6 cm
4.9-14.1 oz | 140-400 g
7-15 years
Tokay Gecko
3.500
4.200
40.600
0.400
15.00
50100
GUIDE
3D
Tokay Gecko
10.8’-12.5’ | 3.3-3.8 m
6.6’-7.5’ | 2-2.3 m
26.2’-29.5’ | 8-9 m
11,000-19,800 lb | 5,000-9,000 kg
40-70 years
Triceratops
380.000
230.000
900.000
9000.000
70.00
617000
GUIDE
3D
Triceratops
6.9’-8.2’ | 2.1-2.5 m
3.3’-3.9’ | 1-1.2 m
19.7’-23’ | 6-7 m
5,600-8,000 lb | 2,540-3,629 kg
20-25 years
Tuojiangosaurus
250.000
120.000
700.000
3629.000
25.00
4200
GUIDE
3D
Tuojiangosaurus
15.75’-17.7’ | 4.8-5.4 m
5.25’-6.2’ | 1.6-1.9 m
36’-40’ | 11-12.2 m
12,600-15,400 lb | 5,7000-7,000 kg
20-28 years
Tyrannosaurus | T-Rex
540.000
190.000
12200.000
7000.000
28.00
715000
GUIDE
3D
Tyrannosaurus | T-Rex
2.4”-4.33” | 6.1-11 cm
2.36”-3.94” | 6-10 cm
14”-24” | 35.6-61 cm
3-6 oz | 85-170 g
3-8 years
Veiled Chameleon
11.000
10.000
61.000
0.170
8.00
39600
GUIDE
3D
Veiled Chameleon
.8”-1.4” | 2-3.5 cm
2’-4’ | .61-1.22 m
.55-1.3 lb | .25-.6 kg
20-25 years
Water Moccasin
3.500
122.000
0.600
25.00
191000
GUIDE
3D
Water Moccasin
1.4”-2.75” | 3.5-7 cm
3’-7’ | .91-2.13 m
2.6-14.8 lb | 1.2-6.7 kg
15-26 years
Western Diamondback Rattlesnake
7.000
213.000
6.700
26.00
20800
GUIDE
3D
Western Diamondback Rattlesnake
Maiasaura (Maiasaura peeblesorum)
Size comparison drawing of the Maiasaura compared to a person

The Maiasaura is a large herbivorous hadrosaurid dinosaur that lived in the Upper Cretaceous Period. The first fossils were found in 1978, but the genus was named in 1979, and they lived in the area covered by the state of what is now Montana, US. The name, Maisaura, which means ”good mother reptile” or ”good mother lizard” in Latin, is in reference to the find of nests with eggs, embryos, and young animals in a nesting colony; this shows that Maiasura fed its young while they were in the nest. Young animals were thought to walk on their hind legs, and adults were thought to walk on all fours.

The Maiasaura had an overall length between 26.2’-29.5’ (8-9 m), standing height of 8.2’-9.2’ (2.5-2.8 m), and body width of 3.3’-3.9’ (1-1.2 m). The weight of the Maiasaura was between 5,600-10,000 lb (2,540-4,536 kg).

Dimensioned series of illustrations of the Maiasaura
The Maiasaura is a large herbivorous hadrosaurid dinosaur that lived in the Upper Cretaceous Period. The first fossils were found in 1978, but the genus was named in 1979, and they lived in the area covered by the state of what is now Montana, US. The name, Maisaura, means ”good mother reptile."

The Maiasaura had an overall length between 26.2’-29.5’ (8-9 m), standing height of 8.2’-9.2’ (2.5-2.8 m), and body width of 3.3’-3.9’ (1-1.2 m). The weight of the Maiasaura was between 5,600-10,000 lb (2,540-4,536 kg).

Dimensioned series of illustrations of the Maiasaura
Maiasaura (Maiasaura peeblesorum)
Height:
8.2’-9.2’ | 2.5-2.8 m
Width:
3.3’-3.9’ | 1-1.2 m
Length:
26.2’-29.5’ | 8-9 m
Depth:
Weight:
5,600-10,000 lb | 2,540-4,536 kg
Area:
Scientific Name
Maiasaura peeblesorum
Lifespan

Drawings include:

Maiasaura top view, side

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Desert Iguana (Dipsosaurus dorsalis)
Scale illustration of an average Desert Iguana compared to other lizard species

The desert iguana (Dipsosaurus dorsalis) is a medium-sized lizard occuring most commonly in dry areas of the Sonoran and Mojave deserts in the United States southwest. Specifically, it dwells in the sandy range of the desert containing creosote bush: a plant that provides shelter from potential predators and the heat as well as a source of its diet. Physical features include: a gray and tan skin coloration with a brown pattern along its back and slides and a long tail nearly twice as long as the body. The desert iguana is able to withstand extreme temperatures, lasting longer out in the day than that of other species of lizard.

The Desert Iguana has an overall length between 10”-16” (25.4-40.6 cm), body width of 1.06”-1.65” (2.7-4.2 cm), body height of 1.1”-1.73” (2.8-4.4 cm), and weight between 2-3 oz (57-85 g). The typical lifespan of the Desert Iguana is between 7-14 years.

Series of measured illustrations of the Desert Iguana
The desert iguana (Dipsosaurus dorsalis) is a medium-sized lizard occuring most commonly in dry areas of the Sonoran and Mojave deserts in the United States southwest. Specifically, it dwells in the sandy range of the desert containing creosote bush: a plant that provides shelter and food.

The Desert Iguana has an overall length between 10”-16” (25.4-40.6 cm), body width of 1.06”-1.65” (2.7-4.2 cm), body height of 1.1”-1.73” (2.8-4.4 cm), and weight between 2-3 oz (57-85 g). The typical lifespan of the Desert Iguana is between 7-14 years.

Series of measured illustrations of the Desert Iguana
Desert Iguana (Dipsosaurus dorsalis)
Height:
1.1”-1.73” | 2.8-4.4 cm
Width:
1.06”-1.65” | 2.7-4.2 cm
Length:
10”-16” | 25.4-40.6 cm
Depth:
Weight:
2-3 oz | 57-85 g
Area:
Scientific Name
Dipsosaurus dorsalis
Lifespan
7-14 years

Drawings include:

Desert Iguana top view, side

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Tokay Gecko (Gekko gecko)
Comparison illustration of the size of a Tokay Gecko to other lizards

The tokay gecko, known as one of the larger species of gecko,  inhabits the rainforests across southeast and east Asia. It can be found residing in trees, rock crevices, or even on the walls and ceilings of homes. The tokay gecko uses its coloration to camouflage itself within its environment, being able to lighten or darken its skin depending on the surroundings. The tokay gecko’s behavior can be defined as aggressive and territorial with a bite that can pierce through skin, which makes it a more difficult pet to own although common in the trade.

The Tokay Gecko has an overall length between 8”-16” (20.3-40.6 cm), body width of .83”-1.65” (2.1-4.2 cm), body height of .59”-1.38” (1.5-3.5 cm), and weight between 4.9-14.1 oz (140-400 g). The typical lifespan of the Tokay Gecko is between 7-15 years.

Scaled collection of drawings of Tokay Gecko in various poses
The tokay gecko, known as one of the larger species of gecko, inhabits the rainforests across southeast and east Asia. It can be found residing in trees, rock crevices, or even on the walls and ceilings of homes. The tokay gecko uses its coloration to camouflage itself within its environment.

The Tokay Gecko has an overall length between 8”-16” (20.3-40.6 cm), body width of .83”-1.65” (2.1-4.2 cm), body height of .59”-1.38” (1.5-3.5 cm), and weight between 4.9-14.1 oz (140-400 g). The typical lifespan of the Tokay Gecko is between 7-15 years.

Scaled collection of drawings of Tokay Gecko in various poses
Tokay Gecko (Gekko gecko)
Height:
.59”-1.38” | 1.5-3.5 cm
Width:
.83”-1.65” | 2.1-4.2 cm
Length:
8”-16” | 20.3-40.6 cm
Depth:
Weight:
4.9-14.1 oz | 140-400 g
Area:
Scientific Name
Gekko gecko
Lifespan
7-15 years

Drawings include:

Tokay Gecko top view, side

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Rhino Iguana (Cyclura cornuta)
Comparison drawing of the Rhino Iguana compared to other lizards

The rhino or rhinoceros iguana (Cyclura cornuta) is a predominantly herbivorous lizard that occurs in Haiti, the Dominican Republic, and the surrounding Caribbean islands. Although its diet primarily consists of various plants and fruits, it has been spotted preying on small insects and reptiles. It is distinguished by a protrusion on its snout resembling that of a horn, providing the reason for its name although the function of the horn projection is unknown. It also has a large, stout body with a grayish brown skin coloration. The rhino iguana has a preference toward dry, rocky areas rather than amongst trees and vegetation.

The Rhino Iguana has an overall length between 20”-54” (50.8-137 cm), body width of 1.89”-5.31” (4.8-13.5 cm), body height of 2.95”-8.46” (7.5-21.5 cm), and weight between 10-20 lb (4.5-9 kg). The typical lifespan of the Rhino Iguana is between 10-20 years.

Set of scaled top and elevation drawings of the Rhino Iguana
The rhino or rhinoceros iguana (Cyclura cornuta) is a predominantly herbivorous lizard that occurs in Haiti, the Dominican Republic, and the surrounding Caribbean islands. Although its diet primarily consists of various plants and fruits, it has been spotted preying on small insects and reptiles.

The Rhino Iguana has an overall length between 20”-54” (50.8-137 cm), body width of 1.89”-5.31” (4.8-13.5 cm), body height of 2.95”-8.46” (7.5-21.5 cm), and weight between 10-20 lb (4.5-9 kg). The typical lifespan of the Rhino Iguana is between 10-20 years.

Set of scaled top and elevation drawings of the Rhino Iguana
Rhino Iguana (Cyclura cornuta)
Height:
2.95”-8.46” | 7.5-21.5 cm
Width:
1.89”-5.31” | 4.8-13.5 cm
Length:
20”-54” | 50.8-137 cm
Depth:
Weight:
10-20 lb | 4.5-9 kg
Area:
Scientific Name
Cyclura cornuta
Lifespan
10-20 years

Drawings include:

Rhino Iguana top view, side

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Tuojiangosaurus (Tuojiangosaurus multispinus)
Comparison illustration of the size of a Tuojiangosaurus to a person

It may be that only one specimen of Tuojiangosaurus has been found, but it has provided more than enough information about this lizard that lived during the later part of the Jurassic period. The information shows it was an herbivore and inhabited Asia though the fossil was discovered in the Sichuan province in China. It preferred terrestrial habitat and reproduced by laying eggs. It had a bulky body, a narrow, low head, and short limbs or arms. But the most identifiable feature is the backplates (tall, narrow, and triangular) running from the neck to the middle of the tail and the two spikes at each end of the tail.

The Tuojiangosaurus had an overall length between 19.7’-23’ (6-7 m), standing height of 6.9’-8.2’ (2.1-2.5 m), body width of 3.3’-3.9’ (1-1.2 m), and weight from 5,600-8,000 lb (2,540-3,629 kg). The typical lifespan of the Tuojiangosaurus was between 20-25 years.

Dimensioned series of illustrations of the Tuojiangosaurus
It may be that only one specimen of Tuojiangosaurus has been found, but it has provided more than enough information about this lizard that lived during the later part of the Jurassic period. The information shows it was an herbivore and inhabited Asia.

The Tuojiangosaurus had an overall length between 19.7’-23’ (6-7 m), standing height of 6.9’-8.2’ (2.1-2.5 m), body width of 3.3’-3.9’ (1-1.2 m), and weight from 5,600-8,000 lb (2,540-3,629 kg). The typical lifespan of the Tuojiangosaurus was between 20-25 years.

Dimensioned series of illustrations of the Tuojiangosaurus
Tuojiangosaurus (Tuojiangosaurus multispinus)
Height:
6.9’-8.2’ | 2.1-2.5 m
Width:
3.3’-3.9’ | 1-1.2 m
Length:
19.7’-23’ | 6-7 m
Depth:
Weight:
5,600-8,000 lb | 2,540-3,629 kg
Area:
Scientific Name
Tuojiangosaurus multispinus
Lifespan
20-25 years

Drawings include:

Tuojiangosaurus top view, side

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