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A hedgehog is a spiny mammal of the subfamily Erinaceinae, in the eulipotyphlan family Erinaceidae. There are 17 species of hedgehog in five genera found throughout parts of Europe, Asia, and Africa, and in New Zealand by introduction. There are no hedgehogs native to Australia and no living species native to the Americas.
Male echidnas have a four-headed penis. [26] During mating, the heads on one side "shut down" and do not grow in size; the other two are used to release semen into the female's two-branched reproductive tract. Each time it copulates, it alternates heads in sets of two. [27] [28] When not in use, the penis is retracted inside a preputial sac in ...
Cloaca of a red-tailed hawk. A cloaca (/ k l oʊ ˈ eɪ k ə / ⓘ kloh-AY-kə), pl.: cloacae (/ k l oʊ ˈ eɪ s i / kloh-AY-see or / k l oʊ ˈ eɪ k i / kloh-AY-kee), or vent, is the rear orifice that serves as the only opening for the digestive (), reproductive, and urinary tracts (if present) of many vertebrate animals.
Aedeagus of Pentodon idiota Photomicrograph of the aedeagus of water scavenger beetle Tormissus linsi (from above). An aedeagus (/ i ˈ d i. ə. ɡ ə s / or / i. d i ˈ eɪ. ɡ ə s / [1] [2] pl. aedeagi) is a reproductive organ of male arthropods through which they secrete sperm from the testes during copulation with a female.
Erinaceidae / ˌ ɛr ɪ n ə ˈ s iː ɪ d iː / is a family in the order Eulipotyphla, consisting of the hedgehogs and moonrats.Until recently, it was assigned to the order Erinaceomorpha, which has been subsumed with the paraphyletic Soricomorpha into Eulipotyphla.
They are distinguished from other, similar spider species by their unique genitalia. Male specimens measured between 0.2 inches and 0.25 inches, scientists said.
The visible portion of eutherian mammalian genitals for males consists of the penis and scrotum; for females, it consists of the vulva. In placental mammals , females have two genital orifices, the vaginal and urethral openings , while males have one genital orifice in the penis where urine and semen exit the urethra during urination and ...
In most terrestrial mammals, the scrotum (pl.: scrotums or scrota; possibly from Latin scortum, meaning "hide" or "skin") [1] [2] or scrotal sac is a part of the external male genitalia located at the base of the penis. It consists of a sac of skin containing the external spermatic fascia, testicles, epididymides, and vasa deferentia. The ...