Canidae

例句：

1. 1.The Canidae are the largest carnivorous mammals in the world.
   犬科动物是世界上最大的食肉哺乳动物。
2. 2.In ancient times, dogs were often used as hunting companions for humans.
   在古代，狗常常被用作人类的狩猎伴侣。
3. 3.Dogs have a strong instinct to protect their owners and their homes.
   狗有很强的保护主人和家园的本能。