Crocodilians | Crocodilia

Crocodilians | Crocodilia

Description
Description

Crocodilians are an ancient group of reptiles that include crocodiles, alligators, caimans, and gharials. This order, Crocodilia, dates back about 200 million years, surviving past mass extinctions. Modern crocodilians are semi-aquatic predators, primarily found in tropical regions across Africa, Asia, the Americas, and Australia. They inhabit rivers, lakes, wetlands, and even some coastal areas. Adapted to an aquatic lifestyle, they have streamlined bodies, powerful tails for swimming, and eyes and nostrils positioned on top of their heads for submerged hunting. Crocodilians play a crucial ecological role as apex predators and their presence indicates a healthy ecosystem.

Anatomy
Anatomy

Crocodilians possess robust, elongated bodies covered in tough, scaly skin, providing armor-like protection. Their muscular tails, comprising almost half their body length, propel them effectively through water. Short, sturdy limbs end in webbed feet, aiding in swimming and muddy terrain navigation. Crocodilians have a powerful bite, with jaws filled with conical teeth perfect for gripping prey. They don't truly vocalize "speech," but they can emit deep growls and hisses for communication. Keen senses are a highlight; sharp eyesight above water, sensitive hearing, and special receptors detect vibrations and water pressure changes, making them formidable ambush predators.

Human Interaction
Human Interaction

Crocodilians and humans share a relationship steeped in awe and apprehension. Revered in ancient cultures, depicted as deities in Egyptian lore, they now frequent our screens, starring in films like "Crocodile Dundee" and "Lake Placid".

Despite their menacing portrayal in media, real-world interactions are often conservation-driven. Once hunted extensively for their hides, species like the American alligator have rebounded thanks to protective laws. Global conservation efforts aim to preserve their habitats and curb illegal poaching, recognizing crocodilians' vital role in ecosystems. Respectful coexistence is promoted, acknowledging both their dangerous nature and ecological importance.

Common Questions
Common Questions
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.

Animals

* Under Development *

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
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
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
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
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
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
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
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
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
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
Freshwater Crocodile (Crocodylus johnstoni)
Comparison drawing of the Freshwater Crocodile compared to other crocodlians and a person

The Freshwater Crocodile (Crocodylus Johnstoni) also known as the Australian freshwater crocodile, has a brown back with black irregular bands and a white underside. They are native to the Australian region and live in rivers, creeks, and lagoons. The freshwater crocodile is not a known man-eater, but will bite a human in self-defense. Their diet typically consists of insects, spiders, turtles, small reptiles, and water rats. They are opportunistic feeders and hunt by waiting for their prey to come within close range. They are not considered endangered and have a lifespan of typically 50 years.

The Freshwater Crocodile has an overall length between 5’-9.8’ (2.1-3 m), body width of 11”-16.5” (28-42 cm), body height of 9.4”-13.8” (24-35 cm), and weight between 88-220 lb (40-100 kg). The typical lifespan of the Freshwater Crocodile is between 40-100 years.

Set of scaled top and elevation drawings of the Freshwater Crocodile
The Freshwater Crocodile (Crocodylus Johnstoni) also known as the Australian freshwater crocodile, has a brown back with black irregular bands and a white underside. They are native to the Australian region and live in rivers, creeks, and lagoons. The freshwater crocodile is not a known man-eater.

The Freshwater Crocodile has an overall length between 5’-9.8’ (2.1-3 m), body width of 11”-16.5” (28-42 cm), body height of 9.4”-13.8” (24-35 cm), and weight between 88-220 lb (40-100 kg). The typical lifespan of the Freshwater Crocodile is between 40-100 years.

Set of scaled top and elevation drawings of the Freshwater Crocodile
Freshwater Crocodile (Crocodylus johnstoni)
Height:
9.4”-13.8” | 24-35 cm
Width:
11”-16.5” | 28-42 cm
Length:
5’-9.8’ | 2.1-3 m
Depth:
Weight:
88-220 lb | 40-100 kg
Area:
Speed
Scientific Name
Crocodylus johnstoni
Lifespan
40-100 years

Drawings include:

Freshwater Crocodile top view, side

Downloads

2D Downloads

3D Downloads

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

Downloads

2D Downloads

3D Downloads

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

The American Crocodile (Crocodylus Acutus) is one of the largest crocodile species, has gray-green skin, and a narrow triangular snout. They are found in the coasts and rivers of southern Mexico, central America, the Caribbean, and northern regions of South America. Their diet consists of small mammals, birds, fish, crabs, insects, snails, frogs, and sometimes carrion. They don’t have to feed often as their digestion system allows them to survive extended period of time without food. The American crocodile is considered to be vulnerable to extinction. They have an average life span of up to 70 years in the wild.

The American Crocodile has an overall length between 13.1’-20’ (4-6.1 m), body width of 24.4”-36.6” (62-93 cm), body height of 20.9”-32.3” (53-82 cm), and weight between 882-2,006 lb (400-910 kg). The typical lifespan of the American Crocodile is between 50-70 years.

Series of measured illustrations of the American Crocodile
The American Crocodile (Crocodylus Acutus) is one of the largest crocodile species, has gray-green skin, and a narrow triangular snout. They are found in the coasts and rivers of southern Mexico, central America, the Caribbean, and northern regions of South America.

The American Crocodile has an overall length between 13.1’-20’ (4-6.1 m), body width of 24.4”-36.6” (62-93 cm), body height of 20.9”-32.3” (53-82 cm), and weight between 882-2,006 lb (400-910 kg). The typical lifespan of the American Crocodile is between 50-70 years.

Series of measured illustrations of the American Crocodile
American Crocodile (Crocodylus acutus)
Height:
20.9”-32.3” | 53-82 cm
Width:
24.4”-36.6” | 62-93 cm
Length:
13.1’-20’ | 4-6.1 m
Depth:
Weight:
882-2,006 lb | 400-910 kg
Area:
Speed
Scientific Name
Crocodylus acutus
Lifespan
50-70 years

Drawings include:

American Crocodile top view, side

Downloads

2D Downloads

3D Downloads

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

Downloads

2D Downloads

3D Downloads

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

Downloads

2D Downloads

3D Downloads