一些热血动物，例如猫，狗和狼。
Some warm-blooded animals, like the cat, the dog or the wolf.
其它夜食动物如麝香猫、獴和土狼也偶尔发出这种声音。
Other nocturnal solitary predators such as civets, mongooses and even hyenas are known to purr occasionally.
其它夜食动物如麝香猫、獴和土狼也偶尔发出这种声音。
Other nocturnal solitary predators such as civets, mongooses and even hyenas are known to purr occasionally.
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