They have long necks.

I swear this is a true story, though every part of it does sound dubious.

For reasons that are better left unelaborated, Neruda and his fellow exiles sought recently to rent a giraffe. They called the office of an organization that advertised itself as hiring out "large exotic animals." The woman with whom they spoke said, "Well, we don't have a giraffe per se..." When Neruda wondered what that could possibly mean, she said, "We have an ostrich."