What makes a social animal.

Brain Cells for Socializing | Science & Nature | Smithsonian Magazine:

"Allman likes to show a clip from a documentary about a group of African elephants that adopted an orphaned calf. When the baby elephant falls into a water hole, the matriarch quickly marches in, followed by the others. Together she and a second female use their tusks, trunks and legs to free the calf from the muck. Another animal paws at the steep bank with its foot, building a ramp the youngster uses to climb to safety. 'It's really remarkable,' says Allman of how the elephants rapidly sized up the crisis and worked together to save the baby. 'It's a very high sort of functioning that very few animals are able to do. And,' he adds with a chuckle, 'humans can do it only on good days.'"

An amazing article on a particular high speed nerve cell in the brain that seems to facilitate the recognition of social signals in a few highly social intelligent species like higher primates, elephants, whales, dolphins, and orcas.