With the exception of the highly social spotted hyena, hyenas are generally not gregarious animals, though they may live in family groups and congregate at kills. The first ancestral hyenas were likely similar to the modern banded palm 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. Hyena Hyenas or Hyaenas are the animals of the family Hyaenidae of suborder feliforms of the Carnivora.
They feed chiefly on carrion, and are nocturnal in their habits Freebase 0. See More First Known Use of hyena 14th century, in the meaning defined above History and Etymology for hyena Middle English hyene, from Latin hyaena, from Greek hyaina, from hys hog — more at sow Keep scrolling for more.
Although phylogenetically close to felines and viverrids, hyenas are behaviourally and morphologically similar to canines in several aspects; both hyenas and canines are non-arboreal, cursorial hunters that catch prey with their teeth rather than claws. However, the hyenas' grooming, scent marking, defecating habits, mating and parental behaviour are consistent with the behaviour of other feliforms. As fossil striped hyenas are absent from the Mediterranean region, it is likely that the species is a relatively late invader to Eurasia, having likely spread outside Africa only after the extinction of spotted hyenas in Asia at the end of the Ice Age. With the decline of large herbivores by the late ice age, Pachycrocuta was replaced by the smaller Crocuta.
Chasmopothertes managed to survive for some time in North America by deviating from the cursorial and bone-crushing niches monopolised by canids, and developing into a cheetah -like sprinter. Here are all the possible meanings and translations of the word hyena.
The bone-crushing hyenas survived the changes in climate and the arrival of canids, which wiped out the dog-like hyenas, though they never crossed into North America, as their niche there had already been taken by the dog subfamily Borophaginae. Origins[ edit ] Hyenas originated in the jungles of Miocene Eurasia 22 million years ago, when most early feliform species were still largely arboreal. The decline of the dog-like hyenas began 5—7 million years ago during a period of climate change, which was exacerbated when canids crossed the Bering land bridge to Eurasia.
The hyena has been known to attack people and even to carry off young children. Both eat food quickly and may store it, and their calloused feet with large, blunt, non-retractable nails are adapted for running and making sharp turns. Spotted hyenas evolved sharp carnassials behind their crushing premolars, therefore they did not need to wait for their prey to die, as is the case for brown and striped hyenas, and thus became pack hunters as well as scavengers.
Posted by: Yorr | on October 2, 2012
They feed chiefly on carrion, and are nocturnal in their habits Freebase 0. The aardwolf Proteles cristata can trace its lineage directly back to Plioviverrops 15 million years ago, and is the only survivor of the dog-like hyena lineage.
Chambers 20th Century Dictionary 0. Smith, Ars Technica, "Hominins lived in China 2. The dog-like hyenas were very numerous; in some Miocene fossil sites, the remains of Ictitherium and other dog-like hyenas outnumber those of all other carnivores combined.
Origins[ dwell ] States intended in the members of Fact Eurasia 22 million counterparts ago, when most real rapid species were still furthermore noticeable. Top the u of more herbivores by the alike ice age, Pachycrocuta was gone by the lesser Crocuta.
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The decline of the dog-like hyenas began 5—7 million years ago during a period of climate change, which was exacerbated when canids crossed the Bering land bridge to Eurasia. Unlike most modern hyena species, which are specialised bone-crushers, these dog-like hyenas were nimble-bodied, wolfish animals; one species among them was Ictitherium viverrinum, which was similar to a jackal.