There just two main sources of animal protein for chimps - the termites or colobus monkeys. "Mature males often hunt monkeys up trees, but females are almost always either pregnant or burdened with a clinging infant. This makes hunting difficult, "she says. "Adult females spend more time fishing for termites than males. "So becoming proficient at termite fishing could mean adult females eat better, "They can watch their offspring at the same time. The young of both sexes seen to pursue activities related to their adult sex roles at a very young age. " It is almost impossible for female chimps to hunt monkeys up trees.