Almost all mammal penises have foreskins which called the preputial sheath or penile sheath, into which the whole penis is retracted. Only monotremes the platypus and the echidna lack foreskins. Also not all female animals had a prepuce around the clitoris.
Animal foreskin are widely different from one species to another in different aspects; some domestic animals had a prepuce which is non distinguishable from the penile skin, even some scientists are giving the term “penile sheath” for the whole skin covering the penis. Animal prepuce may acquire a different attractive colours, and it contains a specific preputial exocrine glands, which had a special sexual aroma, which may play a role in sexual attraction; such preputial glands in animals had no human equivalent; and that is may be the source of debate about existence of such glands in the human being.
KeywordsPreputial sheath Preputial glands Mammals Smegma Male musk deer Penile spines
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