crocodileostrichpenguinwhalesharkhippozebralionbutterflygiraffehummingbird reptile 爬行爬行动物物mammal 哺乳哺乳动物物insect昆昆虫虫crocodile鳄鱼 ostrich 鸵鸟penguin 企企鹅whale 鲸shark鲨hippo河河马zebra斑斑马lion狮子子butterfly蝴蝶蝴蝶 hummingbird蜂蜂鸟giraffe长颈鹿鹿 wing翅膀翅膀 Mammals Mammals bodies are covered with hair or fur.Mother mammals feed milk to their babies.Mammals have warm blood Birds All birds have feathers.All birds have two wings.Mother birds lay eggs. Reptiles All reptiles have scales.Mother reptiles lay eggs.Most reptiles have four legs. A snake is a reptiles with no legs.Mammals: wings milk scales feather eggsReptiles: scales milk hair wings featherBirds: milk feathers scales seaMammals: wings scales feathers eggsReptiles: milk hair wings feathersBirds: milk scales seamilkscalesfeathersFirst, I have wings. Second, I have feathers. What kind of animals am I ?You are a bird!First, I have scales. Second, I lay eggs. What kind of animals am I ?You are a reptiles!First, I have hair. Second, I have warm blood. What kind of animals am I ?You are a mammals!