Where to find me in the Zoo African Plains Fun Facts Although giraffes are usually silent, they can make sounds. They are able to moo, hiss and whistle. A giraffe's heart is 2' long and weights nearly 20 lbs. Giraffes are fond of acacia leaves, but the trees can fight back. They produce a sweet sap that attracts ants who build nests in the tree. When the giraffe browses on the tree the ants attack - biting hard and driving the giraffe away with nothing more than a few mouthfuls. Ask an ExpertHave a question about this animal?
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