" Hard to imagine, but Dakotah herself was 99.98 percent wolf, including, you might suppose, the part of her that loved pursuing and catching things over and over at breakneck speed and delivering them back to her pack, in a faint echo of the chase. I’ve wondered if some dogs may feel a higher level of drive for such games, since it’s their only outlet for genetically programmed catch-and-kill hunting behavior. A wolf in the same situation seems more relaxed, more purely at play—certainly the case with the black wolf just then, and with other wild wolves I’ve seen. After all, wolves hunt to live, on a daily basis; fooling around with a toy is more of a break, quite separate from the serious business of living—having fun for the sheer sake of it. To high-drive Labs and border collies, fetch is often more than just a game; it’s their job, a dead serious business. "

― Nick Jans , A Wolf Called Romeo