Hyenas can easily rip a warthog to pieces, but this family allows a group of warthogs to share their den. It turns out, the two families make pretty good housemates – adding extra security from ...

Spotted hyenas grunt and growl. But you know what they're famous for. [Hyena sounds.] So what's all the laughing about? Well, field researchers have noticed that groups of hyenas tend to giggle around ...