The African wild dog is one of the world's most endangered mammals. They reside in Southern Africa, specifically Tanzania and Northern Mozambique. They are social and intelligent animals who like to live in packs averaging between 7 and 15 but can be known to be in a pack of 40. Before their population started to decrease packs of up to 100 were recorded. They are very efficient hunters and rarely ever loose their prey as they hunt in pairs and can run long distances with speeds of more than 44mph. Unlike some other pack mammals, wild dog's co-operate and look after each other like a family. They take it in turns looking after their young in the pack with both male and female's taking it in turns to hunt or babysit the pup's. Although they have large litters, very few pups survive. This is down to the threats that they face on a daily basis.