New Delhi: The hierarchy of the animal kingdom on this planet is based on the binary of predator and prey. While there are many predatory creatures on Earth, including the human beings who have hunted several species to extinction, the largest toothed predator is a massive beast, one which can dwarf any other animal, let alone us. The sperm whale, the largest toothed predator, is a gargantuan brute that of course, lives in the sea.

Also, among the toothed whales, the sperm whale takes the pole position in terms of size. The sole member of the genus Physeter, the whale is know for its massive size and also for certain features which made the animal, much to its misfortune, a lucrative........

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