companion animal

例句：

1. 1.Many people consider dogs as their companion animals.
   许多人认为狗是他们的伴侣动物。
2. 2. The dog was a loyal companion to the old man.
   这只狗是老人的忠实伴侣。
3. 3.She adopted a cat as her companion animal.
   她收养了一只猫作为她的伴侣动物。