Reptiles and amphibians have major physical differences. Reptiles have dry and scaly skin, whereas amphibians feel moist and sometimes rather sticky. They are vertebrates and cold blooded like amphibians. As compared to reptiles, amphibians have smooth skin.

As compared to reptiles, amphibians have smooth skin. The skin of most amphibians is not water-proof unlike reptiles. Although most of the amphibians have lungs, they usually breathe through their skin and lining of their mouth, whereas most reptiles do not. Most amphibians have four limbs.

Amphibians and reptiles are, together, referred to as herpetofauna. Most herpetofauna lay eggs, although some give birth to live young. Amphibians and reptiles are ectotherms, meaning they are unable to regulate heat within their own bodies and must warm up or cool off through behavioural means (e.g., basking in the sun or seeking shade).

Facts about Reptiles 

Reptiles often have dry, scaly skin. Turtles, crocodilians, lizards, and snakes are examples of reptiles. Interestingly enough, even though all of these creatures are reptiles, some of these (like the crocodilians) are actually more closely related to birds than other reptiles like a lizard.

Reptiles, as most commonly defined, are the animals in the class , a paraphyletic grouping comprising all amniotes except synapsids (mammals and their extinct relatives) and Aves (birds). The class comprises turtles, crocodilians, snakes, amphisbaenians, lizards, tuatara, and their extinct relatives.

In the traditional Linnaean classification system, birds are considered a separate class to reptiles. However, crocodilians are more closely related to birds than they are to other living reptiles, and so modern cladistic classification systems include birds within Reptilia, redefining the term as a clade. Other cladistic definitions abandon the term reptile altogether in favor of the clade Sauropsida, which refers to all animals more closely related to modern reptiles than to mammals.

An air-breathing vertebrate covered in special skin made up of scales, bony plates, or a combination of both.

Most reptiles lack a secondary palate, meaning that they must hold their breath while swallowing.

Facts about Amphibians