How to Identify a Crocodilian

Crocodilians are ancient reptiles that have thrived for millions of years. They are semi-aquatic predators found in tropical and subtropical regions. The three main families are crocodiles, alligators, and gharials, each with distinct features. Crocodilians are adapted for aquatic life with specialized bodies for swimming and hunting. They have unique locomotion methods on land, including low and high walks, and can leap using their hind legs and tail.

What is the primary habitat of crocodilians?

• Deserts

• Tropical and subtropical waters

• Arctic regions

• Mountainous areas

During which period did crocodilians first appear?

• Triassic

• Permian

• Jurassic

• Late Cretaceous

Which family of crocodilians is known for a V-shaped snout?

• Alligatoridae

• Crocodylidae

• Gavialidae

• Lacertidae

What is a distinctive feature of the Gavialidae family?

• Narrow snout with a bulge

• Long legs

• Broad snout

• Short tail

How do crocodilians primarily propel themselves in water?

• Using their limbs

• By flapping their wings

• By jumping

• With side-to-side tail movement

What is unique about the high walk of crocodilians?

• It is slower than the low walk

• It resembles the gait of mammals

• It uses only the front legs

• It is used only in water

What adaptation allows crocodilians to stalk prey while submerged?

• Transparent skin

• Eyes, ears, and nostrils on top of the head

• Ability to breathe underwater

• Camouflage scales