They have a backbone, Fish, Amphibians, reptiles, birds, mammals, Butterfly, Insects, They have fins and gills, Reptiles, Bird, Fish, Mammals, They have scales, amphibians , Fish and reptiles, Birds, Mammals, They lay eggs in water, Reptiles, Birds, Mammals, Fish and amphibians , Does it lay eggs in water and have two stages in its life cycle? Damp skin? , amphibians , Fish, Reptiles , They lay eggs on land or in a nest, Mammals, Bird, reptiles, Bird, Amphibians , They have live babies, Birds, Fish, Mammals, Reptiles , They have hair or fur, Fish, Amphibians , Birds, Mammals, They have damp skin , Amphibians , Fish, Reptiles , Birds, They have feathers, Reptiles , Birds, Fish, Mammals, They have mammary glands, Mammals, Fish, Reptiles, They feed young with milk, Amphibians , Fish, Birds, Mammals, They have gills, Reptiles, Fish, Mammals, Birds, They have lungs, Mammals, birds, reptiles, adults amphibians , Fish, Young amphibians , They have warm blood, Reptiles , Fish, Mammals and birds, mammals and reptiles.

Animals classification

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恢復自動保存: ?