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The male is allowed to sniff a female in estrus. Experienced studs cooperate readily in the process. New studs often require encouragement in the form of manual stimulation. [43] Generally the male will mount the female, and the collector quickly directs the male's penis into the latex sleeve. The male ejaculates and the semen is collected in ...
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]
The male sings when storms approach and again when storms have passed. [45] In addition to its song, the species has a number of calls used for communicating specific information, such as when a ground predator approaches and when a nest or another American robin is being directly threatened.
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.
Male felids are able to urinate backwards by curving the tip of the glans penis backward. [54] [55] In cats, the glans penis is covered with spines. Penile spines also occur on the glans of male and female spotted hyenas. [54] In male dogs the glans penis is smooth and consists of two parts called the bulbus glandis and pars longa glandis. [56]
One difference between the glans penis and the glans clitoridis is that the glans clitoridis packs nerve endings into a volume only about one-tenth the size of the glans penis. Therefore, the glans clitoridis has greater variability in cutaneous corpuscular receptor density (1-14 per 100× high-powered field) compared with the glans penis (1-3 ...
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The penis sheath of a male axis deer is elongated and urine-stained. When rubbing trees with their horns, these stags sometimes move the penis back and forth rapidly inside its sheath. [10] Male bison and fallow deer have tufts of fur at the end of their penis sheaths. [11] In rodents, the length of the prepuce is related to urine marking ...