The Royal Bengal Tiger
Tiger is the largest living member of the cat
family. It has a graceful built. The reddish yellow coat with black stripes
gives it a royal look. Ventrally it is white. Its ears are black on the outside
and each of them has a prominent white spot on it.
The scientific name of tiger is 'Panthera
tigris'. The origin of the cat family from what we know today is Siberia. From
there, they migrated down south as the climate became colder. Tigers are found
in Siberia, Manchuria and the Asian continent. In Asia, India and Malaysia are
the two prominent countries where tigers live. The Indian tigers, the Royal
Bengal tigers are the most graceful animals found in Sundarban in Bengal.
In India we had over forty thousand tigers in
the beginning of the 20th century. Today it is very sad to note that the
statistics is much lower. The reasons for tiger becoming an endangered species
are uncontrolled felling of trees resulting in the shrinkage of the habitat of
the tiger, decrease of preys, increase of poaching for its beautiful skin. The
treat of extinction forced the government of India to initiate the 'Project
Tiger' on the first of April 1973 when the tiger population was less than 2000.
Initially nine tiger reserves were selected. This number has now increased.
The tiger lives in varied habitats open
jungles, humid evergreen forests and mango grove swamps. Its diet consists
mainly of deer, antelopes, gaurs and wild pigs. Sometimes it also captures
birds, lizards, turtles, fishes, frogs and crabs. Tigers hunt on their own and
usually lead a solitary existence, each in its own territory. They are endowed
with good swimming power but seldom climb trees.
Tigers are rapidly decreasing in the world. In
the last millenium, three sub-species of tigers already lost their existence
while five other species are endangered. The first lot of the three sub-species
comprised of panthera tigris virgata, panthera tigris balica and panthera tigris
sondica.
The endangered species are Bengal Tiger
(Panthera tigris tigris), Amur Tiger (Panthera tigris attaica), Chinese Tiger (Panthera
tigris amoyensis), Indonesian Tiger (Panthera tigris sumatrae) and Indo-Chinese
Tiger (Panthera tigris corbetti). To save these tigers, a movement called Save
Tiger has been working since 1972.
Total number of tigers in India in 1972 was
1800 which has since then increased to 3500-4000. Efforts of the Government,
NGOs and the people have brought about this change. The Wildlife Conservation
Act was passed in 1972. But incidents of poaching is still heard. We have
sixteen project tiger field areas in our country. They are Corbet National Park,
Kanha National Park, Indravati National Park, Sarinka National Park, Melghat
Sanctuary, Palamou Tiger Reserve, North Simlipal National Park, Buxa Sanctuary,
Sunderbans National Park, Manas Sanctuary, Namdapha National Park, Nagarjun
Sagar Shvishailam Sanctuary, Bandipur National Park.
Breeding of tigers are done very carefully in
many zoological gardens. Recently a cub was born in the calcutta zoo. These
newborns are genetically different due to genetic recombination. This feature is
known as genetic variation. It is an important component for a living being to
adopt itself in the nature. This genetic variations help them to fight against
any odds.
The Great Indian Rhinoceros
The biblical unicorn may have been a wild ox,
but the great Indian rhinoceros is similar to a unicorn: it has a single horn,
usually about 53 cm long, and it is very hard to find, being among the rarest
mammals in the world today.
The Rhino's horn is not a true horn, but
consists of compressed hair, and the animal prefers to defend itself with its
canine teeth with which it can make horrible gashes. Rhinos became extinct in
America long ago, and are becoming much scarcer in other parts of the world, but
there are still five species remaining: two in Africa and three in Asia. They
are the largest land mammals after the elephant and weigh from 1,800 to 3,600
kg.
The Indian rhino has well-developed incisor
teeth and two long canine teeth in its lower jaw. It is studded with knob-like
tubercles and is unique in having huge folds of skin at its joints and great
rolls at the neck. Together with the large, horny plates covering its body, the
beast appears to be armour plated.
Threatened by continued loss of habitat and
poaching, conservation efforts are essential to ensure this creature's survival.
Conservation objectives include: the maintenance of a wild population of at
least 2,000 rhinos in at least six major sanctuaries in the current range of the
species; translocation of animals to create new sanctuaries and populations;
continued anti-poaching efforts; maintenance of a captive population capable of
long-term viability to guard against any unforeseen extinction of the wild
population; and reduction in the demand for rhino products.
The armour-like hide is thick and tough with
many folds, and large, raised bumps on the neck, shoulders and flanks - a
characteristic which differentiates it from the closely related Javan
rhinoceros. The other differential feature is the neck fold: in the great Indian
rhinoceros it does not continue across the back. The skin is usually brownish,
with the interior of the folds slightly pink, but, due to mud wallowing, the
coloration varies with the region's soil colour. There is little hair on the
hide except on the edges of the ears, the eyelashes, and the tuft on the tail.
The triangular upper lip is prehensile. There is one horn on the nose, though it
is usually short and dull, worn down by use.
Ecology and Behaviour The great Indian
rhinoceros is active throughout the day, although the middle of the day is spent
wallowing and resting in the shade. Wallowing takes place in lakes, rivers,
ponds, and puddles, and is especially frequent in the hot seasons. This activity
is believed to be important with thermoregulation and the control of flies.
Drinking occurs almost every day, and mineral licks are visited regularly.
Population densities vary from 0.4-4.85 animals per square kilometre depending
on the habitat. Only the strongest males breed, and they have home ranges
between 2-8 square kilometres in size. These home ranges are not true
territories, and overlap each other. When disturbed, these rhinos generally
flee, though they have been reported attacking, which they do with their head
down. In this fashion, protective mothers kill several people each year in
India. More than 10 distinct vocalizations have been recorded, including a honk,
bleat, trumpet, and roar. Smell is important in communication, with urine, feces,
and glandular secretions carrying the messages.
The Indian Elephant
The Asian elephant is one of three species in
the order Proboscidea, the others being the Savanna elephant and the Forest
elephant.
The Indian elephant ( Elephas maximus indicus)
is a one of three subspecies or races of the Asian elephant ''Elephas maximus".
The other two subspecies of the Asian elephant are E. m. sumatranus on Sumatra
and E. m. maximus on Sri Lanka. The Indian elephant for example, is larger, has
longer front legs and a thinner body than the Asian elephant found in Thailand.
Through adaptive radiation, elephants until
the Pleistocene Era (2 million years ago) had spread throughout the world except
for Australia, New Zealand and Antarctica. Their sheer size was a factor in
allowing this wide radiation and they could be found in a wide variety of
habitats from desert to high mountain forest areas.
Elephants in general are the largest existing
land mammals and they have the biggest brains in the animal kingdom (weighing 5
kg or 11 lbs).
In general, the Asian elephant weighs between
3-5 tons (6,615-11,025lb); however the smaller Sumatran subspecies weight range
begins at 2 tons (4,000lb). By contrast, the African elephant weighs between 4-7
tons (8,820-15,435lb). An Asian elephant's height at the shoulder is between
6.6-11.5ft (2-3.5m). By contrast the African elephant stands 9.8-13.1ft (3-4m).
The Asian elephant has been captured, tamed
and worked by people for more than 4,000 years; it stirs the human imagination
like no other animal. They can easily move through swamps or climb mountainous
terrain that is too difficult for a horse. Their hearts beat 28 times a minute.
The Trunk : Elephants are endowed with
versatile trunks, which have over 100,000 muscles units that make it extremely
dexterous. This incredible dexterity enables an elephant to pick up very small
items and use their trunks for a wide variety of functions. The trunk has no
bones or cartilage except for a tiny bit of cartilage at the tip of the trunk
which separates the nostrils; each nostril is lined with a membrane. The septum
is a partition dividing the two nostril cavities and it is composed of tiny
muscle units. There is a single “finger” at the tip of the Asian elephant's
trunk whereas the African elephant has two “fingers”. Elephants do not use their
trunks like a straw to drink through — they suck water into the trunk and squirt
it into their mouths. Females are usually smaller than males and can be easily
distinguished by the two mammary glands located on the chest.
Hearing and Sight : One of the main visible
distinctions between the Asian and African elephant is the size of their ears.
The Asian elephant's ears do not exceed the height of the neck whereas the
African elephants do. All elephants have acute hearing far superior to humans
and their large ears act amplifiers. There is a “knuckle” found at the back of
the ear, which is one of the softest parts of their bodies; mahouts, using their
feet will steer or give commands to the animal. Elephants' communication is rich
in infrasound (ranging below what humans can hear) with sound traveling over
many kilometers. These long distance infrasonic calls are used in times of
stress, excitement, during separation and to relay sexual information. Elephants
have have small eyes and poor eyesight so they can only see clearly up to about
30-40 feet (10m). Their sight tends to improve when they are in shaded areas.
and have no canine teeth.
Teeth: Elephants do not have canine teeth but
they have four high crowned molars with a complex structure for grinding their
food. These teeth do not succeed one another vertically in the usual mammalian
fashion, but come in successively from behind, one tooth at a time. Think of
them like a conveyor belt moving slowly from back to front. When the foremost
tooth is so worn down and is of no further use, it is pushed out, mostly in
pieces and replaced at the rear by a new one. An elephant grows only six
complete sets of these molars during its lifetime; the final set finishes
growing in at about the age of 40. This method of replacing teeth prolongs their
dentition until that age. Many elephants do reach the age of 60, but few
elephants reach the age of 70 because the teeth will be worn down and decayed to
the point of them not being able to eat any more resulting in death by slow
starvation. A baby elephant will have two or three cheek teeth in each jaw
quadrant. As it gets older, new and successively bigger teeth will form in back
of these, slowly pushing them forward.
The tusks, which never stop growing, are in
fact teeth (elongated upper incisors) and are classified as ivory. They are
modified incisors made up mostly of dentine (a bone like tissue found in many
animals). The only other animal to have ivory teeth is the walrus. Not all th e
male Asian elephants have tusks; the tendency is genetically determined. For
example in Sri Lanka only 7% of the males are tuskers whereas in Southern India
up to 90% will have tusks. These regional variations may have something to do
with past and present hunting pressure. In the females they are either absent or
rudimentary. M ales are sometimes found with tusks up to 1.8m in length; however
they are usually much shorter because they have been worn down from work,
foraging, digging or broken from fighting. It is very rare to find a male with
evenly long tusks.
The skin is about 1 inch (2.5cm) thick,
however it is paper-thin on the insides of the ears, around the mouth and the
anus. The skin contains no sweat glands and is soft to the touch. Skin care is
an important part of an elephant's lifestyle. Wallowing plays an integral role
in elephant society; it also serves as a way to protect the skin from insect
bites, sunburn and moisture loss. A bath is important to both captive and wild
elephants. It not only cleans them, but is also relaxing to them. Working
elephants have to rely on their mahouts to give them daily baths. Rubbing
against trees and bathing are equally important in maintaining healthy skin. The
freckled look of the Asian elephant is a result of lack of pigment. Baby Asian
elephants have brownish red hair that covers their bodies which lessens with
age; however, they retain more hair than the African elephant, even as adults.
Their brain weighs about 5 kg or 11 lbs.
The latest estimate (June 2003) of the Asian
elephant population is below 30,000. The African species is estimated at
approximately 500,000.
India 's elephant population is estimated
between 10,000 and 15,000, the largest in Asia. About half of these are found in
the northeastern states of Assam, Arunachal Pradesh and Meghaiaya located in far
northeastern India.
Indian Leopard
These cats have an elongate and muscular body.
Their paws are broad and their ears are short. In tropical regions their coats
tend to be shorter and sleeker, whereas in colder climates their fur is longer
and denser. The coloration varies from the color of straw to grayish to even
chesnut. The backs of the ears are black except for a spot either located
centrally or near the tips. These appear to other animals as eyes. The throat,
chest, belly, and the insides of the limbs are white. The rest of the head,
throat, chest, and limbs all have small black spots. The belly has larger black
spots, almost like blotches. Region and habitat have an affect on the appearance
of P. pardus.
In Africa, leopards living in hilly areas tend
to be larger than those living in lowlands. There is a tendency to melanism
(black coloration) in this species. This characteristic is more frequent in
densely forested areas where being darker is probably beneficial in remaining
unseen as compared to open areas. Whether spotted or black, leopards' coloration
is extremely effective. Scientists have been unable to spot these cats just a
few yards away even knowing that they were present. Leopards have been recorded
as long as 2.92 meters but that is extreme, 1.37-1.67 is more common.
Pantera pardus could at one time be found from
British Isles to Japan and throughout most of Asia. Today they can still be
found in Africa, except for the true deserts of Sahara and Kalahari, and some
parts of Asia such as Sri Lanka. Leopards are more common in Eastern and Central
Africa. Conversely, they are rare in Western and Northern Africa and most of
Asia (Nowak, 1997; Sanderson, 1972).
Leopards are famous for their ability to go
undetected. They may live practically among humans and still be tough to spot.
They are graceful and stealthy. Amongst the big cats they are probably the most
accomplished stalkers. They are good, agile climbers and can descend from a tree
headfirst. Along with climbing, they are strong swimmers but not as fond of
water as tigers; for example, leopards will not lay in water. They are mainly
nocturnal but can be seen at any time of day and will even hunt during daytime
on overcast days.
In regions where they are hunted, nocturnal
behaviour is more common. These cats are solitary, avoiding one another.
However, 3 or 4 are sometimes seen together. Hearing and eyesight are the
strongest of these cats' senses and are extremely acute. Olfaction is relied
upon as well, but not for hunting. When making a threat, leopards stretch their
backs, depress their rib cages between their shoulder blades so they stick out,
and lower their heads (similar to domestic cats). During the day they may lie in
bush, on rocks, or in a tree with their tails hanging below the treetops and
giving them away.
Asiatic Lion
The Asiatic lion, in India, is now found in
only one pocket located in the Gir National Park of the state of Gujarat. There
have been efforts made to relocate a small number of these lions to another park
to try and ensure better survival chances of this majestic animal. However,
these plans are yet to be put into action.
The Asiatic Lion grows to a height of
approximately 90cm , with their length ranging from 200 - 280cm. Their long and
hard tails grow to an additional length of 60 - 90cm. Lions can weigh in at
between 200 - 275kgs . Their main prey species consist of Nilgai, Chital,
Sambhar, Goats, Buffaloes and occasionally also other smaller animals. The lions
of Gir have made it a habit of killing livestock and sometimes even camels.
Their breeding season is timed along with the
onset of winter in the months of October and November . Their gestation period
is 3 and a half months , with litters ranging between 3 - 4 in number. The
lionesses breed on an average of every two years and are ready to have their
first lot of babies around the age of 30 - 36 months. They have a life
expectancy ranging between 20 - 30 years.
Just like their African cousins, the Asiatic
males too have handsome manes , which are absent in the females . The Asiatic
lions tend to have smaller manes than their African cousins. The Asiatic lions
however have a bushier overall coat and also have longer tufts of hair at the
end of the tail and on the elbow joints . The colouration of the manes vary from
lion to lion. The only rare ones are the very dark manes, which according to a
research done in Africa are the ones prefered by lionesses!
Lions mostly live in large prides . These
prides can sometimes have upto 3 adult males but it is always one that is the
dominant leader . The males are known for their laziness and lordship like
behaviour. The females do all the hunting , with the males only rarely joining
in when the prey is a very large animal like an aggressive buffalo. However,
once the kill is made, the males always get the first go at the meal .
The bonding among a family of lions is
extremely strong with aunts and sisters helping in the bringing up of all young.
Females stay with the pride all through life, whereas the males tend to set out
on their own around the age of three. They mostly lead solitary lives then
onwards but have been known to also roam territories in pairs and trios. These
bachelors are known to be the main threats to the dominant males leading their
prides. They are also known to kill cubs to try and get the females into estrus
once again . These bachelors are mostly brothers that left a pride together but
individual bachelors have been known to team up with other individuals.
Lions, unlike the tiger, hunt in groups. They
collectively stalk their prey and have been commonly seen applying strategies
that would do any army commander proud. Very often some of the females pinpoint
a particular individual prey and chase it in the direction of other lionesses
waiting in ambush. The prey is mostly killed by a quick, powerful bite to the
spine or with the help of a classic choke grip, with the strong jaws of the lion
cutting off air supply to the lungs.
Although history shows the coexistence of
lions and tigers, there is no prevalent example of this anywhere in the world at
present. Lions do coexist even in the current era with leopards and cheetahs.
However, they are extremely territorial and attempt to kill these leopards and
cheetahs whenever their paths happen to cross. If the attempt at relocating
lions to other parts of India is finally undertaken, it will also answer the
question of whether it is possible for two such ferociously territorial and
powerful large cats to inhabit the same jungle.
The Asiatic Lion has been declared the most
endangered large cat species in the world. Their numbers ranging between 250 -
300, all concentrated in the same area, they are under the constant threat of
being wiped out by some deadly epidemic. It is hoped by all conservationists
that the governing authorities settle their differences of opinion on the best
possible plan and take some action before it's too late to save one of the most
magnificent beasts to roam the planet.
The Barasingha
The barasingha weighs 170 - 180 kg (370 - 400
lb). It occurs in a wide range of habitats, especially preferring marshes, where
it can be highly aquatic, and grassy areas close to water. It also occurs in a
variety of forest types. It eats mainly grasses. The barasingha can be active
during the day or at night. It associates in mixed herds of males and females
for most of the year, averaging about 10 - 20 animals in a herd.
The barasingha was formerly located in
suitable localities throughout the basins of the Indus, Ganges and Brahmaputra
Rivers as well as central India . Its population has declined significantly.
Currently, it is restricted to India and Nepal in a northern population in the
terai of Uttar Pradesh and adjoining Nepal and Assam, as well as a southern
population in Madhya Pradesh.
The drastic decline of the barasingha is due
predominantly to loss or modification of its habitat for cultivation or tree
plantations, such as the planting of eucalyptus. Poaching and shooting for
(allegedly) crop protection has also had a major impact. Diseases introduced by
cattle may also have been a factor.
The barasingha was formerly located in
suitable localities throughout the basins of the Indus, Ganges and Brahmaputra
Rivers as well as central India as far south as the Godavari River, generally in
areas covered by moist, deciduous forests . In the 19th century it occurred
along the base of the Himalayas from Upper Assam, in a few places in the Indo-Gangetic
plain from the Eastern Sundarbans to Bahawalpur to Rohri in Upper Sind, and
locally throughout the area between the Ganges and Godavari as far east as
Mandla.
In the early 20th century it was found
primarily in the marshes bordering the Himalayas and along some of the rivers in
the Gangetic basin; in Assam, India it was common in the Brahmaputra River
valley; in central India , it was found in scattered pockets mostly south of the
Narmada River in what is now the state of Madhya Pradesh. By the middle 1960's,
populations were small and isolated and declining rapidly. At that time it was
found in greatest concentration in Uttar Pradesh and the adjoining area of
southwest Nepal ; scattered small herds also occurred in northern Bengal, Assam
and Madhya Pradesh. Currently it is found in several localities in the terai of
southern Nepal and adjacent districts of India, and in Assam and Madhya Pradesh,
India ( Wemmer et al. 1998 ).
The causes of the barasingha's decline and
present threats include destruction or modification of its habitat for wetland
reclamation, grass and timber cutting, illegal gathering of fuelwood and other
resources in reserves, and cultivation or tree plantations; poaching; and
shooting for (allegedly) crop protection. Diseases introduced by cattle may also
have been a factor.
The barasingha occupies a wide variety of
forest types, including dry and moist deciduous forest , mangrove forest and
evergreen forest, but its prime habitat in the past has been grasslands and reed
beds bordering the major rivers in the northern part of its range. Regardless of
the vegetation type, it prefers areas with water; flat to moderately hilly
terrain; and open localities comprised of either marshes and grasslands or of
woodlands with an understory of grasses.
Gaur (Indian Bison)
The Gaur or Indian Bison is a large endangered
herbivore, and can be seen in protected sanctuaries in India. In the wild its
young are preyed upon by tigers and leopards and the loss of its habitat due to
human encroachment has led to the reduction in its population across India. In
North East India a tame version of the Gaur, known as Mithun is used as a farm
animal and is sacrificed and eaten at ritual feasts.
Zoological name: Bos frontalis
Range: The Gaur can be seen in the wild in
forests of South and Eastern India, Burma, Thailand, Malaysia, Cambodia, Laos,
Vietnam, Nepal and Bhutan.
Estimated population: It is estimated that
there are around 1000 Gaur or Indian Bison worldwide.
The Gaur or Indian Bison is a large animal.
Male Gaurs are black in color, while female Gaurs are brown. Both the hide of
male and female Gaurs is white below the knee of each leg, giving the gaur an
appearance of wearing white stockings. Gaur calves are light brown and do not
have "stockings." Adult Gaur bulls can grow almost 2 m tall and weigh from 650
to 1000 Kg. Female Gaur are smaller in size. Older male Gaurs have a big dorsal
ridge along the length of their backs and huge dewlaps.
The Gaur lives in grassy clearings and in
evergreen and deciduous forest. The Barasingha is found in forested areas in
Karnataka and Assam in India. It can live in altitudes up to 1,800 m. Gaur
usually spend the night in a forest and emerge into the forest clearings to feed
during the day.
Gaurs are herbivores. They feed mainly on
grass. During times of drought Gaurs will eat leaves, creepers and plants. Being
ruminant animals they usually feed during the morning, rest and ruminate in the
afternoon, feed some more in the evening and return to the forest cover to rest
at night.
Gaurs usually live in herds of around 10
animals, however herds of up to 40 Gaurs have been seen. Herds are led by an
adult male bull. Bulls fight amongst themselves to establish dominance over a
herd. Male bulls may also live in bachelor herds. Gaurs vocalize to warn the
herd of danger and to communicate among themselves. Licking is another means of
communication among Gaurs.
Gaurs are endangered with only around a 1000
left in the wild. Their numbers are threatened by human encroachment of their
habitat. Diseases of domestic cattle are also a threat to the survival of Gaur
in the wild.