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Male dogs have a conspicuous penis sheath. [8] Penile sheath of a Chihuahua with cryptorchidism. In stallions, the retractor penis muscle contracts to retract the stallion's penis into the sheath and relaxes to allow the penis to extend from the sheath. [9] The penis sheath of a male axis deer is elongated and urine-stained.
A notable difference from the human penis is that the visible part during an erection consists entirely of the glans. The retractor muscle is attached at the shaft of the penis. It is a paired smooth muscle that is used to retract the penis back into the sheath.
For domestic dogs the tie may last up to half an hour or more, though usually less. [7] When male canines are sexually excited, the bulbus glandis may swell up inside the penile sheath, even if the dog has been neutered. [8] The bulbus glandis also occurs in the penises of some pinnipeds, including South American fur seals. [9]
Baculum of a dog's penis; the arrow shows the urethral sulcus, which is the groove in which the urethra lies. Fossil baculum of a bear from the Miocene. The baculum (pl.: bacula), also known as the penis bone, penile bone, os penis, os genitale, [1] or os priapi, [2] is a bone in the penis of many placental mammals.
Picture of a classical Greek athlete wearing the kynodesme (attributed to the Triptolemos painter, dating from about 480 BC) A kynodesmē (Greek: κυνοδέσμη, English translation: "dog tie") was a cord or string [1] or sometimes a leather strip that was worn primarily by athletes in Ancient Greece and Etruria to prevent the exposure of the glans penis in public (considered to be ill ...
The retractor penis muscle occurs in marsupials and carnivorans, but it is absent in humans. [1] A stag's penis forms an S-shaped curve when it is not erect, and is retracted into its preputial sheath by the retractor penis muscle. [2] In Tandonia, the retractor penis inserts at the boundary between the penis and epiphallus. [3]
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Penis sheath may refer to: Koteka, a piece of clothing in New Guinea; Namba (clothing), in Vanuatu; Penile sheath, a fold of skin that covers the penis in male mammals;