In this situation, unrelated bats stopped grooming each other.

在这种情况下，无亲的蝙蝠不再互相梳毛。

That's because they are constantly grooming themselves.

那是因为他们不断地给自己梳毛。

That is a tough one. Uh, II know he brushes both of them.

好难抉择。我知道他既帮女友梳发，也帮狗梳毛。

Instead, cats recreate the sweating process—which works to cool humans via evaporation—by grooming themselves regularly.

相反，猫通过经梳理给自己梳毛，来模拟出汗过程——这种过程通过蒸发来使人类降温。

In this hypothesis, vocal exchanges can serve as a replacement for grooming to maintain social bonds.

在这一假说中，为了维持社会，声音交流可以替代梳毛。

It could be explained by the direct benefits gained through cooperation, such as trading food for grooming.

这可能是因为它们可以通过合作获得直接利益，比如用食物交换梳毛。

In addition, older owlets preferentially offered food to their hungriest siblings, even in the absence of grooming.

此外，即使没有梳毛作为交换，年长者仓鸮也更愿意为最饥饿的兄弟姐妹提供食物。

They found that the answer was both. Younger birds groomed older ones more often than older ones groomed the youngsters.

他们发现答案是两者兼而有之。就仓鸮而言，年幼者为年长者梳毛的频率要高于年长者为年幼者梳毛的频率。

Or like grooming in other primates, like chimps or monkeys… … where individuals will devote a lot of time and energy into grooming their closest friends to strengthen those relationships.

或者像其他灵长类动物那样梳毛，如黑猩猩或猴子… 它们会投入大量的时间和精力来给最亲密的朋友梳毛，以加强这些。