Phade, I still say there are others, but I hate sounding like a know-it-all. Its well documented how lynx drive out bobcats, once the food source is comprimised in any way. Snowshoes and grouse, two cat staples, are both cyclic, as are those two cats. Bears tolerate each other, but again, its the fact that blacks can climb that keeps them in business in big bear country. Ask a northern trapper what happens to his line once a wolverine starts running it. Like I said, at the risk of sounding like a k.i.a., its not just canines, but all predators. Yes, they do tolerate each other in some situations, and doughboy makes a valid point on how prey control predators too. Its both, for different reasons.

Jhoffman, I too like the debate. I only mention not being offended, almost tongue in cheek, because I seem to be contradicting the majority here again, isnt that how it usually is with me? Lol, lets keep the debate open. Thats what these forums are for.