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Spotted hyena are some of the most recognizable and successful carnivore of sub - Saharan Africa . But this success belies a very real struggle each grownup hyaena must face — the socially and physically complicated world of hyena sex .
Along with the striped hyena , chocolate-brown hyaena and aardwolf , thespotted hyenais one of four hyena coinage alive today . But compare with the other varieties , the espy hyaena garners far more scientific care .
A spotted hyena mother with her cub.
" They have a hundred things about them that make them unequaled , " said Micaela Szykman Gunther , an ecologist at Humboldt State University in California whose inquiry focuses on the reproductive behaviour of social animals . " People have been very transfixed by them . "
One of the most interesting things aboutspotted hyenas , Gunther told Live Science , is the complex social arrangement that underlie their mating doings . [ See Photos of Spotted Hyenas at With Their Kills ]
Clan liveliness
Spotted hyenas live in hierarchical clans , which typically contain 40 to 80 individual , though they may have fewer fellow member depending on the habitat . Whatever the sizing of the chemical group , however , individuals still know and regularly interact with all other kinship group members , Gunther say .
female , beingthe larger and more belligerent sexual practice , rule these kin group . In fact , even the highest - ranking male seat below the lowest - order female person . Females typically outride in the clan they ’re born into , while male leave their natal kin after pubescence to find a new place .
However , being accepted into a unexampled clan is no simple subject — established males see new males as competition . " They are very aggressive to unexampled male , " Gunther said . " so as to be accepted , [ the unexampled male person ] has to defer to every single other hyaena in the clan . "
A new male starts at the very bottom of a kinship group ’s power structure , but he — like all other immigrant male person of the kin — still has an opportunity to mate .
It ’s not clean-cut what incisively is involve in the intimate survival of the fittest of spotted hyenas , but females do appear to favour higher - rank males . Since Male can only gain in social station after a higher - range male die ( they do not fight for rank ) , females may expend their social social status as a variety of index for perseverance and fitness , Gunther said .
conjugation among distinguish hyaena does n’t coincide with specific seasons , as female have multiple estrous cycles throughout the year . During this time , Male may determine the female ’s reproductive position by sniffing her urine .
Awkward suit
male engage in numerouscourtship behaviorsto entice female person .
The most common of these behaviors , Gunther enounce , is the approach - avoid display , in which the male person will approach a female and repeatedly take a few steps toward her and then a few footmark aside , even if the female person does n’t respond to his approaching .
" Males are very wary because females are very belligerent , " Gunther said . " He has to whelm this fear of a dominant animate being . "
The approach - avoid video display is often adopt by a " present " motion , wherein the skittish male person shows his side to the female and grant her to sniffle him .
male may try out various other move as well , including the foot hybridizing ( crossing one foreleg over the other while facing the female person ) , foreleg automobile - stableman ( repeatedly licking and/or rubbing his snout on his foreleg while facing the female ) and paw ground ( strike the ground in front of a female ) .
A male may also bow his head while performing the foot cross and foreleg motorcar - bridegroom .
If the female likes this performance , she will defer her point to the ground and keep her legs braced and asunder — a sign of receptiveness that allow the male know she wo n’t seek to bite him .
Awkward sex
The factual act of pairing is even more unmanageable and awkward than the preceding courtship rituals , due to thefemale ’s strange , malelike intimate physique .
Specifically , females have a retentive , phallus - resemble clitoris — called a pseudopenis or a peniform clit — which they utilise to urinate , teammate and give birthing . ( Interestingly , their labia are fused together and bulb-shaped , resembling a scrotum ) .
To mate , a male must weight his penis up and backward to get it into the female ’s pseudopenis , which is slant onward — a exploit that can only be action with acquiescence from the female , making forced sex physically impossible . congress in the main necessitate a series of unretentive mount from behind follow by one long ( 6 to 7 minute ) mount .
These poor mount , Gunther said , likely help the male find out if the female is still receptive and facilitate the two get the veracious placement .
After ejaculation , the male may rest his chin on the female ’s back for a few moment before dismounting . From there , the twosome will go on their freestanding direction , possibly to mate with other adult in the kindred .
