During field research in Ethiopia’s Guassa plateau, Dartmouth primatologist Vivek Venkataraman encountered a remarkable scene: wolves and monkeys casually commingling. Why weren’t these Ethiopian wolves making little monkey meals out of the baby baboons? In fact, they seemed to do everything they could to avoid raising a ruckus, spending hours roaming through the large gelada herds foraging for rodents.
Betteridge's law of headlines...
The video of the article states that the behavior doesn't qualify as primitive domestication, but instead the relationship displays qualities of commensalism (it isn't explicitly addressed with that terminology, I'm not a biologist but thats what it looks like to me).