(of animals) adapted to or living high in trees, rather than on the ground
树栖的, 栖于树上的
relating to or denoting animals that regulate their body temperature by external sources, such as the surrounding environment
外温性
(of an animal) giving birth to live offspring that have developed from eggs inside the mother's body
卵生的
feeding on or adapted to a diet that consists primarily or exclusively of insects
食虫的, 食昆虫的
a mammal with claws that can't retract and often has a long snout, and often used for companionship, hunting, or guarding purposes
犬, 狗
a summer hibernation for animals to conserve energy during hot and dry conditions
夏眠, 夏季休眠
all the young of a bird hatched at the same time, or the young of an animal cared for together
窝, 幼鸟
any of the sharp curved organs of an arthropod or insect, such as a crab, lobster, etc.
钳子, 爪
one of the two long and sharp teeth that some animals such as dogs, wolfs, or snakes have
獠牙, 尖牙
microscopic animals that float in bodies of water, serving as an important food source for many aquatic organisms
浮游动物, 动物浮游生物
a marine mammal that belongs to the group known as Cetacea, which comprises whales, dolphins, and porpoises
鲸目动物, 海洋哺乳动物