> Whether it's suburban coyotes killing off family pets (a big problem in my suburb at the moment) or rural clashes between ranchers and wolves, you cannot just let the situation unfurl without official intervention.

This is completely backwards. The solution to cats not being at the top of the local food chain is not to kill anything that would eat them, but to end their participation in the food chain. That cats aren't an apex predator is a good thing, because the destruction of native species they accomplish isn't enough to motivate their owners to keep them inside.