Billy, the two-year-old gorilla, went head to head with a grown man to see who would come out on top. Billy, the two-year-old gorilla, went head to head with a grown man to see who would come out ...

Costs and benefits changed depending on the size of gorilla groups, and differed for males and females. For example, friendly females in small groups didn't get ill very often but had fewer ...

In a hypothetical clash of titans, a king cobra and a silverback gorilla face off. The cobra relies on potent venom and agility, while the gorilla boasts immense strength and intelligence.