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Male and female reproductive systems of the spotted hyena. In mammals, all intact developmentally typical males have a penis, but the clitoris in the females of the following species is sufficiently enlarged that it is usually termed a pseudo-penis: spotted hyena, [1] [2] juvenile fossa, [3] binturong, [4] lemur [5] and spider monkey.
In the spotted hyenas, the only way for the males to mate with the females is if they have the female's full cooperation because of the female's peniform clitoris. An increase in the male's status gave them more access to dominant females in the clan. Non-dominant females are observed copulating more often with lower-ranking males. [2]
Hyenas may have occasionally stolen human kills, or entered campsites to drag off the young and weak, much as modern spotted hyenas do in Africa. The oldest Alaskan human remains coincide with roughly the same time cave hyenas became extinct, leading some paleontologists to infer that hyena predation prevented humans from crossing the Bering ...
The tail is short and the terminal hairs do not descend below the achilles tendon. [16] The female striped hyena's genitalia are transiently masculinized, [17] although it lacks the enlarged clitoris and false scrotal sack noted in the female genitalia of the spotted hyena. [18] The female has 3 pairs of nipples. [19]
In some parts of Africa, spotted hyenas have begun to frequent metropolitan areas, where groups or "clans" of the animals have become a menace. The Ethiopian capital Addis Ababa is estimated to have up to a thousand resident hyenas which survive by scavenging rubbish tips and preying on feral dogs and cats. There have also been attacks on ...
The clitoris (/ ˈ k l ɪ t ər ɪ s / ⓘ or / k l ɪ ˈ t ɔːr ɪ s / ⓘ; pl.: clitorises or clitorides) is a female sex organ present in mammals, ostriches and other amniotes.. Although the clitoris exists in all mammal species, [1] [2] [3] most studies deal with the human clitoris - few detailed studies of the anatomy of the clitoris in non-humans exist. [4]
Sexual swellings are concentrations of tumescent tissue, cyclically appearing on the genitalia and adjacent posterior regions of female primates. The exact reproductive purpose of sexual swellings is not fully understood, though the erogenous sensitivity of this tissue is known to motivate females to pursue sexual contact with males. [10]
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.