Hyenas
are a group of carnivorous animals which belong to the order carnivora, suborder feliformia and family hyaenidae. Even though they look like
dogs in their external appearance, they are believed to be more closely related
to cats than dogs and are placed in the suborder feliformia (cat- like carnivores). The family contains four species
in three genera, three of which are restricted to Africa and striped hyena is
found in India.
Hyenas
are primarily scavenging animals, but the spotted hyenas, which are in fact the
largest species of hyena, get nearly 95% of the food that they eat by hunting.
Small animals like gazelle, Impala, Topi, unguarded calves of large animals
like giraffes, wildebeests, kudus, cape buffaloes and elands can also fall prey
to them. The bite of striped hyenas is the strongest known bite in the entire
mammalian class. They are capable of eating virtually everything, right from
the bones, horns, hooves and other hard parts of an animal that the lions and
leopards can’t eat.
The
largest species of hyena is the spotted hyena of Africa (Crocuta crocuta). They
live in clans consisting of a very large number of animals and hence they are
capable of driving leopards and in some cases even lions away from their kills.
Even though a lion is a formidable opponent for a single hyena, when there is a
clan of a large number of hyenas, the lions usually retreat, and the powerful
bite of a hyena means that if it can get grip on the throat, it can kill even
the mightiest of the lions. Hence the spotted hyenas are the most dreaded
carnivores of Africa.
Unlike
most of the other land mammals, the females are usually slightly larger than
males. The average weight for males is about 67 kg and that of the females is
about 70 kg. Spotted hyenas are known to kill and eat humans, even though such
incidents are very rare. There are several authentic records of spotted hyenas
having attacked and killed human beings. Because of their large size and
clanning behavior, they can be formidable antagonists for human beings. The
largest recorded specimens weighed 81 kg and 90 kg (male and female
respectively). But there might be some special circumstances which lead them to
attacking human beings. Otherwise they are shy creatures which run away at the
first sight of a man.
Brown
hyenas (Hyaena brunnea) are the second largest species of hyena. They
weigh around 40-45 kg and females are usually 5 kg lighter than the males.
Unlike their spotted counterparts, they are very poor hunters and most of their
food comes from scavenging. In Kalahari Desert, they have been known to have
driven away the adult leopards from their kills. The leopards avoid conflicts
with hyenas, because they are intelligent enough to climb the trees to escape
the wrath of these dreaded carnivores.
Striped
hyena (Hyaena hyena) is the third largest member of family hyaenidae. This is the sole hyena
species found in India. The diet of spotted hyenas mainly consists of the
leftovers of the kills of tigers and panthers. They are extremely shy creatures
and don’t show the courage which is shown by their spotted cousins. There are
reports of them having attacked human beings, but never did they turn out to be
confirmed man eaters like the spotted ones. They are solitary animals and hence
can’t get the better of leopards and other large carnivores. Even though some
people say that they are capable of driving away even tigers from their kills,
I am highly doubtful about this claim, because a hyena which weighs just over
40 kg is nothing compared to a full grown huge male royal Bengal tiger, which
weighs over 250 kg. The tiger can rip apart a single hyena in just a few
minutes.
Aardwolf
(Proteles
cristata) is the smallest member of the hyena family. Their striped
body gives them resemblance to striped hyenas, but they belong to the subfamily
protelinae. Their body looks more level than the other three members of the
family, because their forelimbs and hind limbs are approximately of the same
length, whereas the aforesaid three members, which belong to the subfamily
hyaeninae, have unusually longer forelimbs, giving them a humpback appearance.
No
matter whatever may be the size and behavior of the four different species of
hyenas, one thing is sure. That is all the four species are endangered today
due to various human activities. So it’s our duty to ensure that the natural
scavengers that the Mother Nature has blessed us with!!
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