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Why is a Hippopotamus called a River Horse?
Among Africa’s unusual creatures is a barrel-shaped gigantic animal, the hippopotamus (plural hippopotami). The hippo is the third largest land animal after the elephant and the rhino. Slightly smaller but heavier than a white rhino, a hippo can weigh nearly 1,800 kg. The animal is huge and barrel shaped nearly 12 feet long and five feet at its shoulder, with a short thick neck and small ears. River Horses [Illustration by Anup Singh] Hippos, or to use their biological name, hippopotamus amphibious literally means ‘river horse’....
Do Whales and Dolphins see Blue?
Dolphins and whales live in the deep blue sea, but strangely these animals are not able to see the colour blue! Leo Peichl of the Max Planck Institute for Brain Research in Frankfurt and his colleagues discovered during routine tests that seals do not respond to the blue colour. Intrigued, they carried out similar tests on few other species, such as dolphins and whales, and found the same results. According to fossil evidence, whales are believed to have descended from a four-legged primitive ungulate (hoofed mammal) which lived on land and was similar to the modern day hippopotamus....
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