FROM LION: you can see from my name that cat and cattiness are in my nature. I must ask where GUEST dredges up his anger? A cat is first and foremost an animal. Animals hunt, kill, and generally wreak havoc on rodents and those types of creatures. However, they are not out roaming far and wide on killing sprees. Unlike some humans. Every pet should be spayed and neutered, kept under control. I really think that we have nothing to worry about as far as cats causing any other creature's extinction and GUEST you should rest easy in your bed, UNLESS you are some kind of rat.