If you notice, many municipalities actually have a deer overpopulation problem. Why do you suppose that is? Because not enough people are killing them there.
Bear attacks happen because not enough people hunt them. Bears are not stupid enough to attack a human they perceive as dangerous. Not enough hunting pressure, over generations, and the animals lose their fear of humans, and begin to see them as a food source.
The creation is fallen, and animals that spill human blood,the Bibles says, will have to give account for it. The same is not said in regards to humans killing animals... only humans killing other humans.