Chimpanzees are less inclined to groom one another with numerous bystanders lingering about. This challenges the long-held belief that such cooperative behaviors are based on trust, suggesting they revolve more around immediate benefits.
Small talk may be an evolutionary way to establish closeness, and we may have inherited it from the primates. A recent study looks at the way lemurs call out to certain known other lemurs to maintain closeness.
Ever wonder how hairy animals keep themselves clean? You may be more familiar with the grooming techniques of household pets, but some animals use "renewable" cleaning strategies researchers hope to apply to keeping technology dust-free.