In the alpine grasslands of eastern Africa, Ethiopian wolves and gelada monkey are giving peace a chance. The geladas – a type of a baboon – tolerate wolves wandering right through the middle of their herds, while the wolves ignore potential meals of baby geladas in favor of rodents, which they can catch more easily when the monkeys are present.

The unusual pact echoes the way dogs began to be domesticated by humans.

When walking through a herd – which comprises many bands of monkeys grazing together in groups of 600 to 700 individuals – the wolves seem to take care to behave in a non-threatening way. They move slowly and calmly as they forage for rodents and avoid the zigzag running they use elsewhere.

This suggested that they were deliberately associating with the geladas. Since the wolves usually entered gelada groups during the middle of the day, when rodents are most active, he wondered whether the geladas made it easier for the wolves to catch the rodents – their primary prey.