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The first ancestral hyenas were likely similar to the modern African civet; one of the earliest hyena species described, Plioviverrops, was a lithe, civet-like animal that inhabited Eurasia 20–22 million years ago, and is identifiable as a hyaenid by the structure of the middle ear and dentition.
The spotted hyena (Crocuta crocuta), also known as the laughing hyena, [3] is a hyena species, currently classed as the sole extant member of the genus Crocuta, native to sub-Saharan Africa. It is listed as being of least concern by the IUCN due to its widespread range and large numbers estimated between 27,000 and 47,000 individuals. [1]
The striped hyena is a primarily nocturnal animal, which typically only leaves its den at the onset of total darkness, returning before sunrise. [10] Striped hyenas typically live alone or in pairs, though groups of up to seven animals are known in Libya.
Brown hyenas have powerful jaws, and young animals can crack the leg bones of springboks in five minutes, though this ability deteriorates with age and dental wear. [7] The skulls of brown hyenas are larger than those of the closely related striped hyena, and their dentition is more robust, indicating a less generalized dietary adaptation. [13]
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.
Image credits: an1malpulse #5. Animal campaigners are calling for a ban on the public sale of fireworks after a baby red panda was thought to have died from stress related to the noise.
Pachycrocuta is an extinct genus of prehistoric hyenas.The largest and most well-researched species is Pachycrocuta brevirostris, colloquially known as the giant short-faced hyena as it stood about 90–100 cm (35–39 in) at the shoulder [1] and it is estimated to have averaged 110 kg (240 lb) in weight, [2] approaching the size of a lioness, making it the largest known hyena.
Spotted hyenas have also been found to catch fish, tortoises, humans, black rhino, hippo calves, young African elephants, pangolins and pythons. [7] There is at least one record of four hyenas killing an adult or subadult hippopotamus in Kruger National Park. [8] Spotted hyenas may consume leather articles such as boots and belts around campsites.