Studies on captive giraffes have shown that they sleep an average of four hours per day, but this is only part of the story. Wild giraffes live on the African Savanna, and as a prey species (they ...

giraffes only seem to sleep for a few minutes at a time (a phenomenon difficult to observe in the wild). They can go for weeks without water by hydrating only with the moisture they suck from leaves.

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Still, wild giraffes need a lot of trees. They live up to 25 years and eat from 75 to 165 pounds of leaves per day. During the dry season, Niger's giraffes get most of their water from leaves and ...