My Science School

            Pygmy hippopotamuses, as appropriately named, are small-sized relatives of common hippopotamuses. They are native to the swamps of West Africa, mainly Liberia.

            Compared to their cousins, a pygmy hippo is tiny in size. It reaches just up to 80 cms in height, and its weight is less than one-fourth of that of a full-sized hippo.

            Pygmies in general are nocturnal and solitary animals, eating only tree leaves, branches, fallen leaves, and fruits. With just less than 3000 individuals, they are classified as an endangered species by the IUCN Red List.

            The main reasons for their population decline can be predicted – habitat loss, conversion to farm land and hunting for food. In spite of the prohibition of the bush meat trade and several awareness programs about the need to conserve endangered species, hunting of pygmy hippos is still a reality in Liberia.

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            An Asiatic cheetah is one of the rarest animals today, because of its status of being critically endangered.

            One of the fastest mammals alive, this animal was once prevalent on the Indian subcontinent. Its range extended throughout India, Pakistan, Afghanistan, and Central Asia. But today, if one has to be lucky enough to see an Asiatic cheetah, he has to go to remote areas in Eastern Iran. Hence, the animal is now also known as the Iranian cheetah. Studies show that presently there are only less than 50 cheetahs in the wild.

            One of the reasons for the disappearance of Asiatic cheetahs is thought to be the absence of preferred preys. We know for a fact that when small animals in an area are over-hunted, it affects the larger ones too.

            Apart from this, cheetahs are poached in large numbers. In Afghanistan and Turkmenistan, it was hunting that brought the cheetah population to a close.

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            As their name suggests, Chinese alligators are members of the alligator family native to China. Originally, their range extended through much of the country. But today, they can be spotted in swamps and ponds in the lower basin of the Yangtze River alone. The population of these alligators has been reduced due to exploitation of their habitat and poisoning of prey.

            The skins of Chinese alligators were once used to make drums but it was never a popular material for making leather products. Besides, these alligators do not attack humans. Yet, we treat them so badly that they are on the verge of extinction. In 1998, the largest area where alligators lived was a small pond along the Yangtze River, surrounded by farmland. And the number of individuals in them was 11!

            Poaching is another threat. These animals are hunted for their meat, which is used in traditional Chinese medicine. Apart from all these, they are killed simply because people think of them as a menace. Experts warn that unless extreme actions are taken, this subspecies will soon become extinct in the wild.

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            Believed to be the cutest in the world, Borneo elephants are a subspecies of Asian elephants native to the lowland forests of Indonesia and Malaysia. They are also known as pygmy elephants, with relatively small sizes, baby-faces, large ears, and plump bellies. The size of these elephants is a fifth smaller than the mainland Indian elephants.

            The tails of Bornean elephants are so long that they often drag it on the ground as they move.

            With a population less than 2000 altogether, they have been classified as endangered by the IUCN Red List. Due to massive deforestation, the habitats of these elephants in Borneo are fragmented. This leaves the animals without shelter and food. Conversion of forest land to commercial plantations, logging, expansion of agriculture fields, and palm plantations too have affected the lives of Bornean elephants very badly.

            They are also hunted down for their valuable tusks. Reports reveal that snares or poisons are often used in forests to catch the elephants. However, this endangered species is protected by law in Malaysia.

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            African wild dogs are members of the dog family that are seen in southern Africa and the southern part of East Africa, especially Tanzania, and Northern Mozambique. They mostly roam in savannah, open plains, and sometimes, in the woodlands of these countries.

            Once respected by several hunter-gatherer societies, African wild dogs are known by various different names like painted dogs, cape hunting dogs, and African hunting dogs. They are highly social, and live in packs of around 10 individuals.

            However, the dogs are most talked about for their reducing numbers. They are considered to be the most endangered predators of Africa. The major threats to their existence are killing, both accidental and targeted, as well as diseases like rabies, canine distemper etc.

            As human encroachment increases, the habitats of the wild dogs are destroyed. This is another factor that leads to Man-animal conflict.

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            Gharials are large crocodiles found in the Indian subcontinent. They are among the largest living crocodiles in the world. These animals have long snouts and mouths with around 110 sharp teeth. The name of this species comes from the unique shape of their snouts. The snouts resemble earthenware pots used in India known as ‘gharas’, hence the name gharials.

            These animals were seen in Pakistan, Nepal, Bangladesh, Bhutan and Myanmar other than in India. But today, it is a critically endangered species that can be spotted only in India and Nepal.

            This change, experts say, has happened over the past decades. With increase in farming and agricultural practices, many habitats of the crocodiles were encroached. Then, factors like mining, pollution and other general disturbances contributed to environmental changes.

            History points out that the species came close to extinction by the 1970s, but was saved by a long-term captive breeding and re-introduction programme. However, in the late 1990s the population again declined. The National Chambal Sanctuary and Katar-niaghat Sanctuary are two of the places in the country where gharials are protected.

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            The proboscis monkey is a large tree-dwelling primate that is native to the island of Borneo in Southeast Asia. With its long and pendulous nose, this is one among the most easily identifiable species of Borneo’s primates. Hence, it is also called the long-nosed monkey.

            Proboscis monkeys have partially webbed feet that make them excellent swimmers.

            Due to extensive habitat destruction and hunting, they have become endangered. Today, there are just less than 1000 of them remaining in the world. Conversion of forest land for agriculture, and palm-plantations pose major threats to their existence.

            They are also vulnerable to poaching. They are hunted for bush meat, as well as to make traditional Chinese medicine. Hence, the population is said to have reduced by more than 50 per cent in the past four decades.

            Experts note that proboscis monkeys are highly sensitive to digestive complications, noise pollution, diseases, and human interference. They are therefore, protected by law, throughout the Borneo range.

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