Warthogs are eaten by varies African predators such as, lion, leopards, cheetahs, crocodiles, hyenas and other scavengers like vultures would eat warthogs.
A carnivore. It eats antelope, birds, warthogs, and hares. The cheetah east about 6lbs of meat per day. A good meal is gazelle, warthogs, gnu, an impala or a wildebeest calf.
Warthogs are herbivorous, or plant eaters. They primarily eat grasses, and are the only type of pig that is a grazer. Deer are definitely not a food source for warthogs.