Gorillas and chimpanzees, though sharing DNA and habitats, exhibit distinct characteristics. Gorillas, the largest primates, ...

Plus, researchers could hear adult howler monkeys calling back and forth with the infants, who would sometimes try to crawl ...

For the primatologists stationed here, mornings begin with a map of yesterday’s chimp movements, a tally of fruiting trees and an ear tuned to the forest. The apes’ calls start early with low ...