The anal glands or anal sacs are small glands near the anus in many mammals.[1] They are situated in between the external anal sphincter muscle and internal anal sphincter muscle.[2] Their function in humans is unclear.[3]
Sebaceous glands within the lining secrete a liquid that is used for identification of members within a species. These sacs are found in many species of carnivorans,[2] including wolves,[4] bears,[5][6] sea otters[7] and kinkajous.[8]
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