Reptile
Reptile
Reptile (/ˈrɛptʌɪl/; from the Latin reptilis, "creeping") is a group of cold-blooded vertebrates that includes turtles, lizards, snakes, alligators, and crocodiles. They are characterized by their ability to lay hard-shelled eggs and primarily live on land.
Etymology
The term "reptile" comes from the Latin reptilis, which means "creeping" or "crawling". This is in reference to the typical movement style of reptiles.
Characteristics
Reptiles are known for their scales or scutes, which provide protection and prevent water loss. They are ectothermic, meaning they regulate their body temperature through external means. Most reptiles lay hard-shelled eggs, although some, like the boa constrictor, give live birth.
Turtles
Turtles are a type of reptile characterized by a special bony or cartilaginous shell developed from their ribs that acts as a shield.
Lizards and Snakes
Lizards and snakes are part of the order Squamata. Lizards are known for their legs and external ear openings, while snakes lack both of these characteristics.
Alligators and Crocodiles
Alligators and crocodiles are large, semiaquatic reptiles that live in tropical regions. They are part of the order Crocodylia.
Related Terms
- Ectothermic: Refers to animals that regulate their body temperature through external means.
- Squamata: The largest order of reptiles, comprising lizards and snakes.
- Crocodylia: An order of mostly large, predatory, semiaquatic reptiles, known as crocodilians.
- Scutes: A bony external plate or scale overlaid with horn, such as the shell of a turtle.
External links
- Medical encyclopedia article on Reptile
- Wikipedia's article - Reptile
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