Out of Africa's savannahs south of the Sahara Desert, hyenas roam. Portrayed as cowards and scavengers, instead these disproportionately powerful hyenas can drop zebras and chase lions from their kill. Hyenas hunt and chase prey in packs at night driving quarry to fatigue, mount the victim and disembowel it. Hyenas rest in cooler rocky dens or dirt holes in daytime. Well known for their boisterous maniacal laughing sounds, they also hurl cries, and bloodcurdling howls.