The giraffe is the only animal born with horns

The giraffe is the only animal born with horns, originally uploaded by badjonni.

As giraffes are rarely heard, many people think they are mute. They are generally quiet, but will vocalize by emitting moans, hisses, snores, hisses, coughs, grunts, moos, snorts, bleats (similar to that of a young calf or sheep), low notes, low, fluttering sounds or flute-like sounds or whistles.