A dog is a mammal of the family Canidae.

狗是犬科哺乳动物.

An animal of the family Canidae, especially a dog.

犬科的各种食肉动物，如澳洲野犬。

Type genus of the Canidae: domestic and wild dogs; wolves; jackals.

犬属的典型种类：家养的或野生的狗；狼；豺。