A number of very curious beliefs surround the desert monitor Varanus griseus in Tunisia and Morocco. Some desert tribesmen believe that this lizard harbours the souls of their ancestors, and in such regions the animal is regarded as sacred, and is not harmed. The Tuaregs also believe that its head is a potent talismen against snake bites. In most other regions, however, few positive opinions are to be found and it is killed on sight. Most people seem to believe that the desert monitor is extremely aggressive and that it can jump to a height of several feet, to deliberately bite a man in the face. Even a blow from the lash of its tail may have serious consequences, resulting in sterility or internal bleeding. Hungry Varanus griseus are also said to attack fully grown camels.