Tiger
Scientific name: Panthera tigris
By Dr. Fourkan Ali
Tigers (Panthera
tigris) are the largest and most powerful of all cats. They are extremely
agile despite their bulk and can leap between 8 and 10 meters in a single bound. They
are also among the most recognizable of cats thanks to their distinct orange
coat, black stripes and white markings.
There are five
living subspecies of tigers, all of which are classified as endangered. These
five subspecies include Siberian tigers, Bengal tigers,
Indochinese tigers, South China tigers and Sumatran tigers.
There are also three additional subspecies of tigers that have gone extinct
during the past sixty years. These extinct subspecies include Caspian tigers,
Javan tigers and Bali tigers.
Tigers vary in
color, size, and markings depending on their subspecies. Bengal
tigers, which inhabit the forests of India,
have quintessential tiger appearance: a dark orange coat, black stripes and a
white underbelly. Siberian tigers, the largest of all the tiger subspecies, are
lighter in color and have a thicker coat that enables them to brave the harsh,
cold temperatures of the Russian taiga.
Tigers are both
solitary and territorial cats. They occupy home ranges that are between 200 and
1000 square kilometers, with females occupying smaller home ranges than males.
They often create several dens within their territory. Tigers are not
water-fearing cats. They are, in fact, adept
swimmers capable of crossing moderately sized rivers. As a result, water
rarely poses a barrier to them.
Tigers are carnivores. They hunt
at night and feed on large prey such as deer, cattle, wild pigs, young
rhinoceroses and elephants. They also supplement their diet with smaller prey
such as birds, monkeys, fish and reptiles. Tigers also feed on carrion.
Size and
Weight:
About 4½-9½ feet
long and 220-660 pounds
Habitat:
Tigers historically
occupied a range that stretched from the eastern part of Turkey
to the Tibetan plateau, Manchuria and the Sea
of Okhotsk. Today, tigers occupy
only about seven percent of their former range. More than half of the remaining
wild tigers live in the forests of India.
Smaller populations remain in China,
Russia, and parts
of Southeast Asia.
Tigers inhabit a
wide range of habitats such as lowland evergreen forests, taiga, grasslands,
tropical forests and mangrove swamps. They generally require habitat with cover
such as forests or grasslands, water resources and enough territory to support
their prey.
Reproduction:
Tigers undergo
sexual reproduction. Although they are known to mate year-round, breeding
usually peaks between November and April. Their gestation period is 16 weeks. A
litter usually consists of between 3 and 4 cubs which are raised alone by the
mother, the father plays no role in the upbringing of the cubs.
Classification:
Tigers are carnivores,
a subgroup of mammals
that also that also includes animals such as bears, dogs, racoons, mustelids,
civits, hyenas, and the aardwolf.
Evolution:
Modern cats first
appeared about 10.8 million years ago. The ancestors of tigers, along with
those of jaguars, leopards, lions, snow leopards and clouded leopards, split
off from the other ancestral cat lineages early in the evolution of the cat
family and today form what is known as the Panthera lineage. Tigers shared a
common ancestor with snow leopards that lived about 840,000 years ago.
Conservation
Status:
Fewer than 3,200
tigers remain in the wild. More than half of those tigers live in the forests
of India. The
primary threats facing tigers include poaching, habitat loss, dwindling prey populations.
Although protected areas have been established for tigers, illegal killings
still take place mainly for their skins and use in traditional Chinese medical
practices.
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