Though chimpanzees and gorillas often coexist in the same areas, interactions of any kind are thought to be rare – those that do happen have been described as relaxed and peaceful.
However, a study in 2021 revealed the first known lethal attacks on gorillas by chimpanzees. The researchers observed an encounter between a group of 18 chimps and five gorillas, in which the chimps formed coalitions to attack the family group.
- 6 animals that battle to the death – whether it's for territory, dominance or survival
- They use tools, fight to the death and live in social groups – and are the closest living relative to humans
- Gorilla guide: where they live, diet, and conservation
While the adults escaped, two infant gorillas were separated during the fray and were killed by the chimpanzees. It is not yet known whether this was a rare or isolated event, or whether killings between the two species are actually more common than thought, as observing such interactions is not easy.
