The hippopotamus is the third-largest type of land mammal and is the heaviest extant land artiodactyl. Despite their physical resemblance to pigs and other terrestrial even-toed ungulates, the closest living relatives of the Hippopotamidae are cetaceans whales, dolphins, porpoises, etc., from which they diverged about 55 million years ago. Hippos are recognisable by their barrel-shaped torsos, wide-opening mouths revealing large canine tusks, nearly hairless bodies, columnar legs and large size; adults average 1,500 kg 3,310 lb for bulls and 1,300 kg 2,870 lb for cows. Despite its stocky shape and short legs, it is capable of running 30 km/h 19 mph over short distances.
圖片編號:
242065656
拍攝者:
Debchephotography
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進階授權 | PEL | 4116 x 2914 | JPG | 88 | |
進階授權 | UEL | 4116 x 2914 | JPG | 88 |
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標準授權 | 480 x 340 px | JPG | 13 點 |
標準授權 | 800 x 566 px | JPG | 15 點 |
標準授權 | 2058 x 1457 px | JPG | 18 點 |
標準授權 | 2969 x 2102 px | JPG | 20 點 |
標準授權 | 3361 x 2379 px | JPG | 22 點 |
標準授權 | 4116 x 2914 px | JPG | 23 點 |
標準授權 | 4199 x 2973 px | TIF | 39 點 |
進階授權 | 4116 x 2914 px | JPG | 88 點 |
進階授權 | 4116 x 2914 px | JPG | 88 點 |
進階授權 | 4116 x 2914 px | JPG | 88 點 |