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
a large container usually made of glass that is filled with water in which fish and other sea creatures are kept

水族馆, 水族箱
(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
