Part Wolf, Part Dog, All Coyote

They aren't going anywhere. In those places that are overrun with Canadian geese, more coyotes are a good thing, as they love goose eggs.

This bit was fascinating:

Not only do coyotes hunt singly and in packs, they have even been observed hunting cooperatively with other species. In Wyoming, scientists have seen coyotes hunting with badgers, large burrowing creatures that enjoy a nice bit of ground squirrel. As badgers dig toward squirrels in their tunnels, coyotes wait above for the squirrels to pop up for a quick escape, or perhaps to be chased back down to be eaten by a badger. Teams may work together often for an hour or more, the coyote mock-chasing or otherwise playfully inviting the lethargic badger to activity when it pauses, and to good purpose. Coyotes hunting with badgers had to work less and ate more than solitary coyotes in the same area. These teams were so effective that researchers reported often seeing the same pairs working together again and again.

Coyotes are expanding their range from the west, probably because humans long ago killed off their main competition in the east: The gray wolf. We humans muck around with Nature at times and we often have little clue what the impacts are of our thrashing around. Yellowstone National park is proving to be in interesting case study in what happens when a top-level predator, the wolf, is removed and then re-introduced.