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- Birds and mammals (such as humans) are ‘warm-blooded’ animals called endotherms. Endotherms generate heat using their own bodies. Reptiles, amphibians, and fish are ‘cold-blooded’ or ectotherms.
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Jun 1, 2024 · Reptiles are characterized by their cold-blooded metabolisms—they fuel themselves by exposure to the sun. They also have scaly skin and leathery eggs, which they, unlike amphibians, can lay some distance from bodies of water.
- Bob Strauss
Jun 12, 2024 · All birds and some groups of extinct reptiles, such as selected groups of dinosaurs, also evolved an endothermic physiology. However, the majority of modern reptiles possess an ectothermic (cold-blooded) physiology. Today only the leatherback sea turtle (Dermochelys coriacea) has a near-endothermic physiology. So far no reptile, living or ...
2 days ago · Reptiles, as commonly defined, are a group of tetrapods with an ectothermic ('cold-blooded') metabolism and amniotic development. Living reptiles comprise four orders: Testudines ( turtles ), Crocodilia ( crocodilians ), Squamata ( lizards and snakes ), and Rhynchocephalia (the tuatara ).
Jun 7, 2024 · Amphibians are cold-blooded animals that transition from living in water to living on land. Examples include frogs, toads, and salamanders. The larvae of these animals live in water and breathe through gills, while adults live on land or in water and breathe through lungs and skin.
3 days ago · Today’s so-called warm-blooded animals are the mammals and birds; reptiles, amphibians, and most fishes are called cold-blooded. These two terms, however, are imprecise and misleading. Some “cold-blooded” lizards have higher normal body temperatures than do some mammals, for instance.
Jun 13, 2024 · For example, reptiles normally have scales and are cold-blooded animals. Birds can have feathers and are warm-blooded animals. But dinosaurs are often considered reptiles, because reptiles of the past did not all look like reptiles of the present.
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