Crocodilians | Crocodilia

Crocodilia is an order of large, semiaquatic, carnivorous, solitary reptiles that first appeared 95 million years ago. Crocodilia, surprisingly, are most closely related to birds, as these two are the only two remaining survivors from the Archosauria age. Crocodilia have members such as crocodiles, alligators, caimans, and gharial. Crocodilia are characterized by their strong bite, stout legs, long snouts with cone-shaped teeth, and thick scales. Crocodilia are found in Southeastern North America, Africa, and Asia. Crocodilia do not chew their prey, but they will clamp down, crush it, and swallow it whole.

How fast can alligators run?

Alligators don’t run long distances, but can travel quickly while they are in water. Typically, they are slower on land, but alligators are able to run at short bursts of speed that can exceed more than 30 miles per hour.

How long do crocodiles live?

Crocodiles can live for a long time, some reaching the age of 100 years. All species of crocodile have a lifespan of about 30 to 40 years, and larger species can live between 60 to 70 years. Most methods of measuring the age of a crocodile are unreliable, but one common method is measuring growth rings in the bones and teeth.

How do alligators mate?

Alligators typically mate in June and attract each other with vocalizations, infrasonic vibrations, and pressing on their snouts and backs. The female alligator builds her nest and lays typically 20 to 50 eggs, and covers them with dirt and leaves. The mother stays near then nest until the eggs hatch.

Crocodilians Guides
Browse through our curated Crocodilians Guides for additional categorizations, tips, details, variations, styles, and histories of Crocodilians. Guides provide additional insights into the unique properties and shared relationships between elements.
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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
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
3D
American Crocodile
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
3D
Black Caiman
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
3D
Chinese Alligator
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
3D
Cuban Crocodile
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
3D
False Gharial
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
3D
Freshwater Crocodile
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
3D
Gharial
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
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
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
3D
Orinoco Crocodile
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
3D
Saltwater Crocodile
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
3D
Spectacled Caiman
Mugger Crocodile (Crocodylus palustris)
Comparison illustration of the size of a Mugger Crocodile to other crocodilians and a person

The Mugger Crocodile (Crocodylus Palustris) also known as the Indian crocodile, has a body covered in brown scales and has the widest snout of all the different crocodile species. The Mugger crocodile looks like an alligator due to its snout. They are native to the freshwater settings of southern Iran and India. They can be found in rivers, lakes, hill streams, and village ponds. The Mugger crocodile’s diet consists of fish, reptiles, birds, insects, and mammals. They are opportunistic feeders. They are considered vulnerable to extinction due to habitat destruction and illegal hunting practices by humans. The Mugger crocodile has a lifespan of 44 years.

The Mugger Crocodile has an overall length between 13.1’-16.4’ (4-5 m), body width of 23.2”-29.1” (59-74 cm), body height of 16.9”-12.3” (43-54 cm), and weight between 992-1,543 lb (450-700 kg). The typical lifespan of the Mugger Crocodile is between 30-44 years.

Scaled collection of drawings of Mugger Crocodile in various poses
The Mugger Crocodile (Crocodylus Palustris) also known as the Indian crocodile, has a body covered in brown scales and has the widest snout of all the different crocodile species. The Mugger crocodile looks like an alligator due to its snout. They are native to freshwater settings.

The Mugger Crocodile has an overall length between 13.1’-16.4’ (4-5 m), body width of 23.2”-29.1” (59-74 cm), body height of 16.9”-12.3” (43-54 cm), and weight between 992-1,543 lb (450-700 kg). The typical lifespan of the Mugger Crocodile is between 30-44 years.

Scaled collection of drawings of Mugger Crocodile in various poses
Mugger Crocodile (Crocodylus palustris)
Height:
16.9”-12.3” | 43-54 cm
Width:
23.2”-29.1” | 59-74 cm
Length:
13.1’-16.4’ | 4-5 m
Depth:
Weight:
992-1,543 lb | 450-700 kg
Area:
Speed
Scientific Name
Crocodylus palustris
Lifespan
30-44 years

Drawings include:

Mugger Crocodile top view, side

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Saltwater Crocodile (Crocodylus porosus)
Size comparison illustration of a Saltwater Crocodile compared to an average person and similar crocodiles

The Saltwater Crocodile, also known as the estuarine crocodile, Indo-Pacific crocodile, marine crocodile, sea crocodile, and saltie, is one of the largest living crocodiles. It is native to saltwater habitats and brackish wetlands including India’s east coast across Southeast Asia and the Sundaic region to northern Australia and Micronesia. The saltwater crocodile was hunted for its skin up until the 1970s, and today it is listed as least concern on the IUCN Red List. The species are hypercarnivorous apex predators, and they can overtake almost any animal that enters their territory. Saltwater crocodiles range in color with some retaining pale skin, while others may be so dark to appear black.

The typical male Saltwater Crocodile has an overall length of 14’-23’ (4.25-7 m), with females at lengths of 7.5’-11’ (2.30-3.35 m). The body width of a Saltwater Crocodile is typically between 13.8”-41.3” (35-105 cm) with a body height of 9.8”-29.5” (25-75 cm). The typical lifespan of the Saltwater Crocodile is between 70-100 years in the wild and 100-120 years in captivity. An average male Saltwater Crocodile weighs between 880-2200 lb (400-1000 kg) and has a typical lifespan of 70-100 years in the wild.

Dimensioned plan and elevation drawings of the Saltwater Crocodile
The Saltwater Crocodile is one of the largest living crocodiles. Saltwater Crocodiles are native to saltwater habitats and are hypercarnivorous apex predators, that can overtake almost any animal that enters their territory. Saltwater crocodiles range in color from pale to dark skin.

The typical male Saltwater Crocodile has an overall length of 14’-23’ (4.25-7 m), with females at lengths of 7.5’-11’ (2.30-3.35 m). The body width of a Saltwater Crocodile is typically between 13.8”-41.3” (35-105 cm) with a body height of 9.8”-29.5” (25-75 cm). The typical lifespan of the Saltwater Crocodile is between 70-100 years in the wild and 100-120 years in captivity. An average male Saltwater Crocodile weighs between 880-2200 lb (400-1000 kg) and has a typical lifespan of 70-100 years in the wild.

Dimensioned plan and elevation drawings of the Saltwater Crocodile
Saltwater Crocodile (Crocodylus porosus)
Height:
9.8”-29.5” | 25-75 cm
Width:
13.8”-41.3” | 35-105 cm
Length:
7.5’-23’ | 2.3-7 m
Depth:
Weight:
180-2200 lb | 82-1000 kg
Area:

Length (Male): 14’-23’ | 4.25-7 m
Length (Female): 7.5’-11’ | 2.30-3.35 m
Weight (Male): 880-2200 lb | 400-1000 kg
Weight (Female): 180-220 lb | 82-100 kg

Speed
15-18 mph | 24-29 km/h
Scientific Name
Crocodylus porosus
Lifespan
70-100 years (wild); 100-120 years (captivity)

Drawings include:
Saltwater Crocodile side elevation, plan

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Cuban Crocodile (Crocodylus rhombifer)
Scale illustration of an average Cuban Crocodile compared to other crocodilian species and a person

The Cuban Crocodile (Crocodylus Rhombifer) is a smaller species of the crocodile. They are native to Cuba, is the most terrestrial of the crocodiles, prefers freshwater, and typically lives in marshes and rivers. They are strong swimmers and can leap. Cuban crocodiles are comfortable on both water and land. Their diet is made up of fish, turtles, and small mammals. Younger Cuban crocodiles eat invertebrates and smaller fish. They are listed as critically endangered and are considered to be one of the most vulnerable crocodile species to extinction. The Cuban crocodile has an average lifespan of 50 to 75 years.

The Cuban Crocodile has an overall length between 7’-7.5’ (2.1-2.3 m), body width of 12.6”-13.8” (32-35 cm), body height of 8.7”-9.4” (22-24 cm), and weight between 154-176 lb (70-80 kg). The typical lifespan of the Cuban Crocodile is between 50-75 years.

Series of measured illustrations of the Cuban Crocodile
The Cuban Crocodile (Crocodylus Rhombifer) is a smaller species of the crocodile. They are native to Cuba, is the most terrestrial of the crocodiles, prefers freshwater, and typically lives in marshes and rivers. They are strong swimmers and can leap. Cuban crocodiles are happy on water and land.

The Cuban Crocodile has an overall length between 7’-7.5’ (2.1-2.3 m), body width of 12.6”-13.8” (32-35 cm), body height of 8.7”-9.4” (22-24 cm), and weight between 154-176 lb (70-80 kg). The typical lifespan of the Cuban Crocodile is between 50-75 years.

Series of measured illustrations of the Cuban Crocodile
Cuban Crocodile (Crocodylus rhombifer)
Height:
8.7”-9.4” | 22-24 cm
Width:
12.6”-13.8” | 32-35 cm
Length:
7’-7.5’ | 2.1-2.3 m
Depth:
Weight:
154-176 lb | 70-80 kg
Area:
Speed
Scientific Name
Crocodylus rhombifer
Lifespan
50-75 years

Drawings include:

Cuban Crocodile top view, side

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Orinoco Crocodile (Crocodylus intermedius)
Scale illustration of an average Orinoco Crocodile compared to other crocodilian species and a person

The Orinoco Crocodile (Crocodylus Intermedius) is similar to the American crocodile as they have a narrow snout that slopes upwards to their nose. They are native to the freshwater environments of Colombia and Venezuela like lagoons or rivers. In nature they are sluggish unless they are feeding. They are opportunistic hunters and generally eat fish, birds, and small mammals. Younger Orinoco crocodiles eat crabs, snails, insects, and fish. The Orinoco crocodile is considered to be critically endangered due to being hunted for their skin and have a small population. They have a lifespan of 80 years.

The Orinoco Crocodile has an overall length between 9.8’-19.7’ (3-6 m), body width of 18.1”-36.6” (46-93 cm), body height of 12.2”-24.4” (31-62 cm), and weight between 496-838 lb (225-380 kg). The typical lifespan of the Orinoco Crocodile is between 60-80 years.

Series of measured illustrations of the Orinoco Crocodile
The Orinoco Crocodile (Crocodylus Intermedius) is similar to the American crocodile as they have a narrow snout that slopes upwards to their nose. They are native to the freshwater environments of Colombia and Venezuela like lagoons or rivers. In nature they are sluggish unless they are feeding.

The Orinoco Crocodile has an overall length between 9.8’-19.7’ (3-6 m), body width of 18.1”-36.6” (46-93 cm), body height of 12.2”-24.4” (31-62 cm), and weight between 496-838 lb (225-380 kg). The typical lifespan of the Orinoco Crocodile is between 60-80 years.

Series of measured illustrations of the Orinoco Crocodile
Orinoco Crocodile (Crocodylus intermedius)
Height:
12.2”-24.4” | 31-62 cm
Width:
18.1”-36.6” | 46-93 cm
Length:
9.8’-19.7’ | 3-6 m
Depth:
Weight:
496-838 lb | 225-380 kg
Area:
Speed
Scientific Name
Crocodylus intermedius
Lifespan
60-80 years

Drawings include:

Orinoco Crocodile top view, side

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False Gharial (Tomistoma schlegelii)
Comparison illustration of the size of a False Gharial to other crocodilians and a person

The False Gharial (Tomistoma Schlegelli) is also referred to as the Malayan gharial, has reddish-brown skin with dark spots and cross-bands on their back and tail. They have a long thin snout with lots of needle-shaped teeth. The false gharial is native to Peninsular Malaysia and Indonesian region. They can be found in rivers, lakes, and swamps. Their diet mostly consists of fish, smaller aquatic animals, large vertebrates, long-tailed macaques, deer, water birds, and reptiles. False Gharials lay the largest eggs of any crocodile. The false gharial is considered vulnerable to extinction. The lifespan of the false gharial is up to 24.7 years.

The False Gharial has an overall length between 13.1’-16.4’ (4-5 m), body width of 27.2”-33.9” (69-86 cm), body height of 26.8”-34.3” (68-87 cm), and weight between 198-463 lb (90-210 kg). The typical lifespan of the False Gharial is between 30-80 years.

Scaled collection of drawings of False Gharial in various poses
The False Gharial (Tomistoma Schlegelli) is also referred to as the Malayan gharial, has reddish-brown skin with dark spots and cross-bands on their back and tail. They have a long thin snout with lots of needle-shaped teeth. The false gharial is native to Peninsular Malaysia and Indonesian region.

The False Gharial has an overall length between 13.1’-16.4’ (4-5 m), body width of 27.2”-33.9” (69-86 cm), body height of 26.8”-34.3” (68-87 cm), and weight between 198-463 lb (90-210 kg). The typical lifespan of the False Gharial is between 30-80 years.

Scaled collection of drawings of False Gharial in various poses
False Gharial (Tomistoma schlegelii)
Height:
26.8”-34.3” | 68-87 cm
Width:
27.2”-33.9” | 69-86 cm
Length:
13.1’-16.4’ | 4-5 m
Depth:
Weight:
198-463 lb | 90-210 kg
Area:
Speed
Scientific Name
Tomistoma schlegelii
Lifespan
30-80 years

Drawings include:

False Gharial top view, side

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