Originally posted by googlefudge
However there is some (disputed) scientific research on cat's killing wildlife,
along with lots of supportive anecdotal evidence.
I was mostly interested in any scientific data because I know it is disputed.
Also maintaining animals that hunt and kill (whether they are otherwise fed or not) in densities far far higher than they would achieve in the wild suggests that they will cause far more wildlife deaths than they would if we didn't maintain them as pets.
I am not convinced by that argument. I think that in most cases, cats simply replace other predators. So sure, we give them an upper hand over other predators, but I am not convinced that they, kill more wildlife than those other predators would.
And there is no natural regulatory mechanism that stops them from wiping something
out as they get fed by us and so don't need the kill as food.
Natural regulatory mechanisms don't stop extinctions either. As long as there is more than one food source, one can go extinct.
What I do know (from anecdotal evidence) is that if you have cats, you get less snakes. Which in a residential area - is a good thing.
Finally, your plan to reduce hunger by eating cats thus helping the environment is doomed to failure. Either the cats will be wiped out very quickly (and thus not serve to help with hunger any more), or we will breed them in even greater quantities to serve demand (thus harming the environment even more). You can't kill two birds with one stone in this case, but you can kill two birds with one cat!
My cat catches birds, snakes, moles, mole rats, insects and lizards.