if you live in any urban area us humans have already outdone them by far. and globally excluding islands with no predators it is likely humans are still the lea

if you live in any urban area us humans have already outdone them by far. and globally excluding islands with no predators it is likely humans are still the leading cause in one form or another (habitat, pesticides, herbicides) us destroying bird habitat and their food sources are far more an issue then cats but hey lets just focus on cats instead of those. not to mention in many ares outside urban centres cats are pretty low down on the food-chain and are as much prey as predator so the main reason to keep your cat inside is so it doesn't become somethings meal