Reptiles
Reptiles have been around for 300 million years, even during the dinosaur age. The most common reptiles include alligators, crocodiles, lizards, snakes, tortoises and turtles. Reptiles are air-breathing animals, although many live not only on land but in water. The most noticeable feature of reptiles are the scales that cover their body. The majority of reptiles lay eggs to give birth to their young.
Although reptiles breathe through lungs, some reptiles can also absorb oxygen in water through membranes in their mouth.
Although reptiles breathe through lungs, some reptiles can also absorb oxygen in water through membranes in their mouth.