a class of animals to which humans, cows, lions, etc. belong, have warm blood, fur or hair and typically produce milk to feed their young

哺乳动物, 乳类动物
a small creature such as a bee or ant that has six legs, and generally one or two pairs of wings

昆虫, 虫子
a group that animals, plants, etc. of the same type which are capable of producing healthy offspring with each other are divided into

物种, 种
a particular type of animal or plant that has typically been domesticated by people in a certain way

品种, 种类
a sharp and curved nail on the toe of an animal or a bird

爪子, 爪
the part of the body of an animal, a bird or a fish that sticks out at the back, which can move

尾巴, 尾
a place where many kinds of animals are kept for exhibition, breeding, and protection

动物园, 野生动物园
(of an animal or plant) living or growing in a natural state, without any human interference

野生的, 生长在自然状态的
(of an animal) capable of living with humans, either on a farm or as a pet in a house

家养的, domesticated的
describing an animal that its body temperature changes depending on the temperature of its surroundings

变温动物的, 冷血的
describing an animal that is able to maintain a higher body temperature than its surroundings

温血的, 恒温的
