The North American population of wolves is regaining its numbers quite quickly, and they are resuming their proper place in the ecosystem - namely, taking out the diseased and weak prey, including deer.I suspect (and some biologists suspect) the reason Chronic Wasting Disease-a prion disease-is propagating in the deer and elk in the Western U.S. is the elimination of wolves.
This doesn't even touch on the coyote population, which has now learned to cohabitate with humans, even in urban areas. I'd have to check to get accurate figures, but I'd take a chance on betting that a larger population of coyotes is in existence today than, say, 1800. They also perform some of the tasks that wolves would normally do, but they are more of a scavenger then a hunter.
We just need more wolves and coyotes and less humans. The current "overpopulation" problem of deer would then take care of itself...
@Fraggle
Surprised you didn't catch this one...