Featured in social behaviors
Gorillas can be cliquey, too. Here’s what that says about our own social lives.
Social hierarchies may predate humans.
A 50-million-year-old school of fish is etched forever in this rare fossil
Megapixels: The ancient rock offers a glimpse of how this freshwater species behaved in unison.
Cuddling up may keep red-bellied lemurs healthy
Hugging spreads microbes, and microbes are (usually) good for you.
Octlantis: Where octopuses buck tradition and live in groups
But they're still pretty gloomy.
African wild dogs vote with sneezes on important pack issues
Scientists know how to make mice angry—but mice know how to keep their cool
The first rule of mouse fight club.
Running might be kind of contagious
Are you working out today because your friend went jogging yesterday?
These monkeys avoid sick friends by sniffing their poo
Mandrills, they're just like us!
Humpback whales are organizing in huge numbers, and no one knows why
It flies in the face of typical humpback behavior.