Source: Dario Sanches, via Wikimedia Commons. Marmosets and other small, tree-dwelling monkeys must be vigilant to survive in the wild. After all, predators ranging from snakes to raptors to cats want ...
We consider humans to be at the apex of social cognition. But we're not the only animals that closely interact with each other. Marmosets, for example, are highly social creatures. In the wild, they ...