The tallest land animal, the lanky giraffe, is perhaps the first thing you think of when you picture the African savanna. With their long legs and necks, giraffes’ graceful silhouettes have featured ...

Did you know that giraffes hum to each other? No, of course you didn't, so stop pretending you did. In fact, researchers have only recently identified the illusive giraffe hum, New Scientist reports.

Late at night, when humans are rarely around, giraffes do something that until now has never been documented. They hum. Researchers attempting to document the sounds made by giraffes recorded almost 1 ...