Wednesday, August 12, 2015

Rock Hyrax

The hyrax is so unlike other animals that it is placed in a separate order (Hyracoidea) by itself. It is said to be the elephant's nearest living relative. This is true to a certain extent, but misleading since the relationship stems from a remote ancestor common to hyraxes, sea cows (dugongs and manatees) and elephants. These three are unlike other mammals, but they share various if disproportionate physiological similarities in teeth, leg and foot bones, testes (that do not descend into a scrotum) and other more obscure details. The hyrax, also called rock rabbit or dassie, is a small furry mammal. It looks like a robust, oversized guinea pig, or a rabbit with rounded ears and no tail. Hyraxes have stumpy toes with hooflike nails, four toes on each front foot and three on each back foot. The longer, clawlike nails on the inside toes of the back feet are used for grooming and scratching. The bottoms of the feet have a rubbery texture to assist in climbing steep rock surfaces and trees. Of the three hyrax species, two are known as rock (or bush) hyrax and the third as tree hyrax. In the field it is sometimes difficult to differentiate among them. The rock hyrax has the widest distribution in East Africa. Its coat is yellowish or grayish-brown, and the dorsal spot (a bare scent gland on the back covered with longer hair) is covered with black or yellow hair. Its head is more rounded than other types of hyraxes, and the nose is blunt. The yellow-spotted hyrax, or rock rabbit, is smaller in size and has a more pointed, rodentlike nose. Generally it has a conspicuous white patch above the eye, and its dorsal spot is whitish or yellowish. It is sometimes seen in company of other types of hyrax, but species do not interbreed. Tree hyraxes, unsurprisingly, spend a lot of time in trees. In some areas they are hunted for their thick, soft, long hair. They have a white or yellow dorsal spot.

No comments:

Post a Comment