I have a couple of guy who sometimes work with me who have dogs for tracking, and they're very effective. One of the problems though is that dogs have so many enemies in the bush. Lions, Leopards, baboons, snakes, honeybadgers etc can all kill dogs. Also a lot of landowners are very chary of letting any dog onto their land in case they decide to go on a killing spree themselves......Then of course, there's the rabies thing.

In some areas such as the Selous they even ban then by law.