Giraffes Facts A giraffe's heart weighs an incredible 24 pounds. A giraffe can go longer without water than a camel. A full grown giraffe's neck can weigh as much as 500 pounds. The tallest mammal in the world is the giraffe. Giraffes have black tongues. In one minute, the heart of a giraffe can pump 160 gallons of blood. An adult giraffe's kick is so powerful that it can decapitate a lion. Adult male giraffes bang their long necks together in a form of ritual fighting, during which no harm is done to either giraffe. A giraffe can clean its ears with its 21-inch tongue!

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