- oviparous- animals that lay eggs
- viviparous-animals that develop their embryos internally.
- homeotherms-animals that maintain its internal body temperature.
- poikliotherms- animals that cant maintain their body temperature and rely on the environment to control it.
- vertibrate classes- fish,amphibians reptiles,birds and mammals
- invertibrate classes- annelids,molluscs, crustaceans, arachnids and insects.
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