Chimpanzees sniff out strangers and family members

Primates, including humans, are usually thought of as visual animals with reduced reliance on the sense of smell. In behavioral experiments, biologists have now found that chimpanzees use olfaction as a prime mode of investigation, and that they recognize group members and kin using olfactory cues. https://www.sciencedaily.com/releases/2018/10/181024083346.htm