Due to its large size, the gorilla has only two major predators. Humans are by far the main predator of G. gorilla, killing animals for their meat, and body parts and in retaliation for damage to crops. Leopards are important predators at some sites, with G. gorilla accounting for 4–9% of biomass consumed. Gorilla gorilla, like G.beringei, is prone to many pests and diseases.