
The Rhino
The Rhinoceros is a
large, primitive looking mammal that in fact dates from the Miocene
era millions of years ago. In recent decades rhinos have been
relentlessly hunted to the point of near extinction. Since 1970 the
world rhino population has declined by 90 percent, with five species
remaining in the world today, all of which are endangered.
The
white or square-lipped rhino is one of two rhino species in Africa.
It in turn occurs as two subspecies, the southern and the northern.
The southern dwindled almost to extinction in the early 20th century,
but was protected on farms and reserves, enabling it to increase
enough to be reintroduced. The northern white rhino has recovered in
Democratic Republic of Congo from about 15 in 1984 to about 30 in the
late 1990s. This population has been threatened by political conflict
and instability.
Name: Black
Rhinoceros - Diceros bicornis | White Rhino - Ceratotherium
simum
The White Rhino: The white rhino's name
derives from the Dutch "weit," meaning wide, a reference to
its wide, square muzzle adapted for grazing. The white rhino, which
is actually grey, has a pronounced hump on the neck and a long face.
The Black Rhino: The black, or
hooked-lipped rhino, along with all other rhino species, is an
odd-toed ungulate (three toes on each foot). It has a thick,
hairless, grey hide. Both the black and white rhino have two horns,
the longer of which sits at the front of the nose.
Size:
The rhinoceros stands about 60 inches at the shoulder.
Weight: Black Rhino: 1 to 1½ tons. White Rhino: over 2
tons.
Habitat: Grassland and
open savannahs. Black rhinos have various habitats, but mainly areas
with dense, woody vegetation. White rhinos live in savannahs with
water holes, mud wallows and shade trees.
Diet:
Vegetarian. Black Rhino - browser. White Rhino -
grazer.
Diet Description: The black rhino is a
browser, with a triangular-shaped upper lip ending in a mobile
grasping point. It eats a large variety of vegetation, including
leaves, buds and shoots of plants, bushes and trees. The white rhino
is a grazer feeding on grasses.
Socialisation:
Rhinos live in home ranges that sometimes overlap with each other.
Feeding grounds, water holes and wallows may be shared. The black
rhino is usually solitary. The white rhino tends to be much more
gregarious.
Rhinos are also rather ill-tempered and have
become more so in areas where they have been constantly disturbed.
While their eyesight is poor, which is why they will often charge
without apparent reason, their sense of smell and hearing are very
good.
They have an extended "vocabulary" of growls,
grunts, squeaks, snorts and bellows. When attacking, the rhino lowers
its head, snorts, breaks into a gallop reaching speeds of 30 miles an
hour, and gores or strikes powerful blows with its horns. Still, for
all its bulk, the rhino is very agile and can quickly turn in a small
space.
The rhino has a symbiotic relationship with oxpeckers,
also called tick birds. In Swahili the tick bird is named "askari
wa kifaru," meaning "the rhino's guard." The bird eats
ticks it finds on the rhino and noisily warns of danger. Although the
birds also eat blood from sores on the rhino's skin and thus obstruct
healing, they are still tolerated
Lifespan:
35 to 40 years.
Reproduction: Young are
born after a gestation period of 16 months.
Predators:
Humans. Man is the cause of the demise of the rhino. In the
wild, the adult black or white rhino has no true natural predators
and, despite its size and antagonistic reputation, it is extremely
easy for man to kill.
A creature of habitat that lives in a
well-defined home range, it usually goes to water holes daily, where
it is easily ambushed. The dramatic decline in rhino is unfortunate
in an era of increasing conservation but efforts are underway to save
the rhino from extinction