I have mixed feelings on this. One hand, I say, leave 'em alone with what God gave them...Wouldn't want a species who used humans as pets to be messing with me....
Other hand, the animal population is outta control, with thousands of innocent animals getting killed every day, just for the crime of being born unwanted.
So, what is the answer ? I know I wouldn't want to be the one doing the killing, each and every day.