To solicit grooming, one warthog lies prone before another. Resting in the shade and mud baths are used when temperatures are high and piglets stay in their mother's shadow. A group of pigs is called a sounder. These social units may consist of a couple of females and their young, a group of young non-breeding males, or subadult mixed groups chased off by their mother. Several in the African section.
Principal predators are lion, leopard, and cheetah.
Hyenas sometimes attack them, but they have also been seen resting together. Hunted for their meat by man. Suffer from a variety of diseases, the most serious being rinderpest, which has killed large numbers in the past. Exterminated in some farming areas since they are a reservoir for African swine fever. The Behavior Guide to African Mammals.