In this report we learn of wolves and monkeys developing an amicable relationship that is apparently beneficial for the wolves as hunting around the monkeys increases their success rate in catching small rodents threefold. Having wolves in their midst may confer some benefit to the monkeys as well, for example keeping other predators at bay, although I think this kind of linear analysis is ultimately shortsighted. Animals have emotion, emotion functions as a "force" of attraction, hence, all animals are attracted to all other animals. That's a network function of emotion that doesn't need an actual tangible reward because emotional connections are satisfying in and of themselves. I do believe that the rapport between these two species illustrates once again how hunting forms powerful emotional connections that can even cross the species' divide. The monkeys begin to occupy role of social peer in the hearts of the wolves because they associate them with emotional flow and so can even be schooled by monkey "discipline." Incidentally this trans-species communication is on the same continuum of ravens leading wolves to a carcass they can't open, and wolves looking upwards and following the ravens. Consensus science currently sees nature as a system of disconnected parts converging only due to material benefits that increase genetic fitness. This misses the interconnectedness based on a common emotional attraction and resulting flow system that is based on the predator/prey dynamic. Since sociability is based on the prey/predator dynamic, social bonds arise from the phenomenon of hunting, nature's "oldest profession."
At some point expect consensus science to conclude that domestication of the dog is every much a part of the natural evolutionary process, it's not something man did to change the wolf into the dog.