The first and foremost characteristic of the reptiles is that are cold blooded. Some of them are terrestrial while others live in water.
This is only a generic overview about the basic characteristics of reptiles. While these features are common for almost all types of reptiles, there are numerous exceptions too.

These animals are most easily recognized by their dry, scaly skin.

Reptiles(((((Discipline:!Science!and!LanguageArts! General Characteristics of Class Reptilia: Some of the general characters of class Reptilia are listed below: 1. Reptiles are a class of vertebrates made up mostly of snakes, turtles, lizards, and crocodilians. The skull of the reptiles is modified that gives the reptiles an efficient and powerful jaw action. The following are the basic and common characteristic of all the reptiles found in the animal world. Many reptiles are have earned a reputation for being slow, but some -- like snakes and crocodiles -- can move extremely fast when threatened, or catching prey. Reptiles are cold blooded animals and are ectodermic vertebrates. The first and foremost characteristic of the reptiles is that are cold blooded. Reptiles(((((Discipline:!Science!and!LanguageArts! (Vertebrates have backbones.)

The modification also makes the skull light.

All reptiles are coldblooded, which means they are ectotherms -- they rely on the environment to generate body heat. Snakes and crocodiles literally "fuel up" by basking in the sun during the day, and are especially sluggish at night, when there's no available energy source.
Grade:!!3rd15th!!!!! Due to their cold blood, they must seek out sources of warmth (like a sun-warmed rock) to help balance their body temperature, and therefore tend to live in climates where it's warm all year round. Reptile, any member of the class Reptilia, the group of air-breathing vertebrates that have internal fertilization, amniotic development, and epidermal scales covering part or all of their body. ADVERTISEMENTS: In this article we will discuss about:- 1. A reptile is an air-breathing animal that has scales instead of hair or feathers. Time:Three!45minute!blocks! Free online educational activities for kids Classifications of Living Reptiles 3. Features. There are two characteristics that distinguished early reptiles from amphibians and enabled them to spread and populate more extensively than their ancestors: scales and the ability to lay hard-shelled eggs. General Characteristics of Class Reptilia 2. Their reproductive methods and behaviors generally differ greatly from mammals, though there are some similarities.