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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.
Although spotted hyenas do prey on humans in modern times, such incidents are rare. However, attacks on humans by spotted hyenas are likely to be underreported. [ 154 ] Man-eating spotted hyenas tend to be large specimens; a pair of man-eating hyenas, responsible for killing 27 people in Mlanje, Malawi , in 1962, were weighed at 72 and 77 kg ...
Hyenas are known to have preyed on humans in prehistory: human hair has been found in fossilized hyena dung dating back 195,000 to 257,000 years. [70] Some paleontologists believe that competition and predation by cave hyenas ( Crocuta crocuta spelaea ) in Siberia was a significant factor in delaying human colonization of Alaska .
Sexual mimicry occurs when one sex mimics the opposite sex in its behavior, appearance, or chemical signalling.. It is more commonly seen within invertebrate species, although sexual mimicry is also seen among vertebrates such as spotted hyenas.
The remains — buried in layers of soil in the collapsed cave — contained the genetic material of cave bears, hyenas and 13 bones of early humans who died some 45,000 years ago.
In ordinary circumstances, striped hyenas are extremely timid around humans, though they may show bold behaviours toward people at night. [10] On rare occasions, striped hyenas have preyed on humans. In the 1880s, a hyena was reported to have attacked humans, especially sleeping children, over a three-year period in the Erivan Governorate ...
Local folklore about hyenas often gives them powers such as gender switching (males and females are difficult to distinguish), shape shifting, and human speech—all of which encourages the belief that the hyena may have contributed to the original myth of the crocotta.
Protogyny sex change has been found within fish species such as the three-spot wrasse (Halichoreres trimaculatas) and the saddleback wrasse (Thalassoma duperrey) with a decline in plasma estrogen contributing to testis development. [12] In contrast, protandrous sex change is the male to female gonadal redifferentiation, but it is also triggered ...