Rhinoceros (Animal)


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Interesting Rhino Facts

Females reproduce only every two and a half to five years. Their single calf does not live on its own until it is about three years old. Black rhinos feed at night and during the gloaming hours of dawn and dusk. Under the hot African sun, they take cover by lying in the shade. Rhinos are also wallowers. They often find a suitable water hole and roll in its mud, coating their skin with a natural bug repellent and sun block. Rhinos have sharp hearing and a keen sense of smell. They may find one another by following the trail of scent each enormous animal leaves behind it on the landscape.

Black rhinos boast two horns, the foremost more prominent than the other. Rhino horns grow as much as three inches a year, and have been known to grow up to five feet long. Females use their horns to protect their young, while males use them to battle attackers. The prominent horn for which rhinos are so well known has also been their downfall. Many animals have been killed for the hard, hairlike growth, which is revered for medicinal uses in China, Taiwan, Hong Kong, and Singapore.

In Alan Rabinowitz publicly denounced governments, NGOs, and other institutions for lacking in their attempts to conserve the Sumatran rhinoceros. To conserve it, they would have to relocate them from small forests to breeding programs that could monitor their breeding success. To boost reproduction, the Malaysian and Indonesian governments could also agree to exchange the gametes of the Sumatran and smaller Bornean subspecies.

The Indonesian and Malaysian governments have also proposed a single management unit for these two ancient subspecies. Plantations for palm oil have taken out the living areas and led to the eradication of the rhino in Sumatra.

Last male Sumatran rhino in Malaysia dies - BBC News

Rhinocerotoids diverged from other perissodactyls by the early Eocene. Fossils of Hyrachyus eximus found in North America date to this period. This small hornless ancestor resembled a tapir or small horse more than a rhino. Three families, sometimes grouped together as the superfamily Rhinocerotoidea , evolved in the late Eocene, namely the Hyracodontidae, Amynodontidae and Rhinocerotidae. Hyracodontidae , also known as "running rhinos", showed adaptations for speed, and would have looked more like horses than modern rhinos.

The smallest hyracodontids were dog-sized; the largest was Paraceratherium , one of the largest known land mammals that ever existed. The hornless Paraceratherium was almost seven metres high, ten metres long, and weighed as much as 15 tons.

Black Rhinoceros

Like a giraffe , it ate leaves from trees. Hyracodontids spread across Eurasia from the mid-Eocene to early Miocene. The Amynodontidae, also known as "aquatic rhinos", dispersed across North America and Eurasia , from the late Eocene to early Oligocene. The amynodontids were hippopotamus -like in their ecology and appearance, inhabiting rivers and lakes, and sharing many of the same adaptations to aquatic life as hippos.

The family of all modern rhinoceros, the Rhinocerotidae, first appeared in the Late Eocene in Eurasia. The earliest members of Rhinocerotidae were small and numerous; at least 26 genera lived in Eurasia and North America until a wave of extinctions in the middle Oligocene wiped out most of the smaller species. However, several independent lineages survived.

Menoceras , a pig-sized rhinoceros, had two horns side-by-side. The North American Teleoceras had short legs, a barrel chest and lived until about 5 million years ago.


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The last rhinos in the Americas became extinct during the Pliocene. Modern rhinos are thought to have begun dispersal from Asia during the Miocene. Two species survived the most recent period of glaciation and inhabited Europe as recently as 10, years ago: the woolly rhinoceros and Elasmotherium. The woolly rhinoceros appeared in China around 1 million years ago and first arrived in Europe around , years ago. It reappeared , years ago, alongside the woolly mammoth , and became numerous.


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Elasmotherium was two meters tall, five meters long and weighed around five tons, with a single enormous horn, hypsodont teeth and long legs for running. Both the Coelodonta and Elasmotherium survived through the late Pleistocene when climate fluctuations, increased predation by newer predators such as hyenas and human hunting led to their extinction. Of the extant rhinoceros species, the Sumatran rhino is the most archaic, first emerging more than 15 million years ago.

The Sumatran rhino was closely related to the woolly rhinoceros, but not to the other modern species. The Indian and Javan rhinos are closely related and form a more recent lineage of Asian rhino. The ancestors of early Indian and Javan rhino diverged 2—4 million years ago. The origin of the two living African rhinos can be traced to the late Miocene 6 mya species Ceratotherium neumayri.

The lineages containing the living species diverged by the early Pliocene 1. Adult rhinoceros have no real predators in the wild, other than humans. Young rhinos can however fall prey to big cats , crocodiles , African wild dogs , and hyenas. Although rhinos are large and have a reputation for being tough, they are very easily poached; they visit water holes daily and can be easily killed while they drink.

As of December , poaching increased globally while efforts to protect the rhino are considered increasingly ineffective. South African officials have called for urgent action against poaching after poachers killed the last female rhino in the Krugersdorp Game Reserve near Johannesburg. The Namibian government has supported the practice of rhino trophy hunting as a way to raise money for conservation. Hunting licenses for five Namibian Black rhinos are auctioned annually, with the money going to the government's Game Products Trust Fund.

Some conservationists and members of the public however oppose or question this practice. However, that ban was overturned in a court case in , and South Africa plans to draft regulations for the sale of rhino horn, possibly including export for "non-commercial purposes".

Unpredictability

Rhinoceros horns, unlike those of other horned mammals, which have a bony core , only consist of keratin , similar to human hair and nails. Rhinoceros horns are used in traditional medicines in parts of Asia, and for dagger handles in Yemen and Oman. Esmond Bradley Martin has reported on the trade for dagger handles in Yemen. The Vietnamese are the biggest consumers of rhino horn, and their demand drives most of the poaching, which has risen to record levels. In , the Register of Chinese Herbal Medicine in the United Kingdom issued a formal statement condemning the use of rhinoceros horn.

In March , some researchers suggested that the only way to reduce poaching would be to establish a regulated trade based on humane and renewable harvesting from live rhinos. To prevent poaching, in certain areas, rhinos have been tranquillized and their horns removed. Armed park rangers, particularly in South Africa, are also working on the front lines to combat poaching, sometimes killing poachers who are caught in the act.

A spike in rhino killings increased concerns about the future of the species. In , the Rhino Rescue Project began a horn-trade control method consisting of infusing the horns of living rhinos with a mixture of a pink dye and an acaricide to kill ticks which is safe for rhinos but toxic to humans.

Depending on the quantity of horn a person consumes, experts believe the acaricide would cause nausea, stomach-ache, and diarrhea, and possibly convulsions. It would not be fatal—the primary deterrent is the knowledge that the treatment has been applied, communicated by signs posted at the refuges. The original idea grew out of research into the horn as a reservoir for one-time tick treatments, and experts selected an acaricide they think is safe for the rhino, oxpeckers , vultures , and other animals in the preserve's ecosystem.

The UK charity organization Save the Rhino has criticized horn poisoning on moral and practical grounds. The organization questions the assumptions that the infusion technique works as intended, and that even if the poison were effective, whether middlemen in a lucrative, illegal trade would care much about the effect it would have on buyers.

Another way to undercut the rhinoceros horn market has been suggested by Matthew Markus of Pembient , a biotechnology firm.

These animals are big, bulky and absolutely brilliant!

He proposes the synthesis of an artificial substitute for rhinoceros horn. Greek historian and geographer Agatharchides 2nd century BC mentions the rhinoceros in his book On the Erythraean Sea. There are legends about rhinoceroses stamping out fire in Burma , India , and Malaysia. The mythical rhinoceros has a special name in Malay , badak api , wherein badak means rhinoceros, and api means fire.

Southern White Rhinoceros

The animal would come when a fire was lit in the forest and stamp it out. This legend was depicted in the film The Gods Must Be Crazy , which shows an African rhinoceros putting out two campfires. From Wikipedia, the free encyclopedia. For other uses, see Rhinoceros disambiguation and Rhino disambiguation.

The five extant species. The white rhinoceros is actually grey. The black rhinoceros has a beak shaped lip and is similar in color to the white rhinoceros. The Indian rhinoceros has a single horn. Smaller in size than the Indian rhinoceros, the Javan rhinoceros also has a single horn.

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The Sumatran rhinoceros is the smallest of the rhino species. Main article: White rhinoceros. Main article: Black rhinoceros. Main article: Indian rhinoceros. Main article: Javan rhinoceros. Main article: Sumatran rhinoceros.

Main article: Hyracodontidae.

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