Ovíparos, branquias, ectotermos, escamas

Ovíparos, piel desnuda y húmeda, 4 extremidades, cola^, pulmones, deben vivir cerca de agua, to corporal variable

Pulmones, escamas, ectotermos, ovíparos^, tienen patas o reptan

Vivíparos^, pulmones, endotermos, pelaje^

Pulmones, ovíparos, cubierto de plumas, endotermos, 4 extremidades (2 alas), algunas vuelan

Anillos y patas articuladas, ovíparos, traqueas/branquias, algunos presentan exoesqueleto sólido (insectos [6], arácnidos [8], crustáceos [10], miriápodos [100, 1.000,…]

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Reino Animal

Term	Definition
Peces	Ovíparos, branquias, ectotermos, escamas
Anfibios	Ovíparos, piel desnuda y húmeda, 4 extremidades, cola^, pulmones, deben vivir cerca de agua, to corporal variable
Reptiles	Pulmones, escamas, ectotermos, ovíparos^, tienen patas o reptan
Mamiferos	Vivíparos^, pulmones, endotermos, pelaje^
Aves	Pulmones, ovíparos, cubierto de plumas, endotermos, 4 extremidades (2 alas), algunas vuelan
Invertebrados	Anillos y patas articuladas, ovíparos, traqueas/branquias, algunos presentan exoesqueleto sólido (insectos [6], arácnidos [8], crustáceos [10], miriápodos [100, 1.000,…]