English-Chinese/Friendship is also found among animals of higher intelligence

Friendship is also found among animals of higher intelligence, such as higher mammals and some birds. Cross-species friendships are common between humans and domestic animals. Cross-species friendships may also occur between two non-human animals, such as dogs and cats.

在高智商的动物中也发现了友谊，例如高等哺乳动物和一些鸟类. 跨物种友谊在人类和家畜之间很常见. 在两种非人类动物（例如狗和猫）之间也可能发生跨物种友谊.