well why worry about a mouse catcher instead of finding the source of the mice/rats and getting rid of them forever??
I have a tabby...once a feral tabby...and i own a rodent and my kitty's response to my rodent pet is to lick her head until she's damp. She loves her that much :love: :love: :love:
my friend has a much larger tabby who has access to the outdoors and she's full aware of critters yet th most she'll attack are flies. My mother's friend has a tabby who goes out at night and comes back with dead presents for the owner lol
so it all depends on the cat. I think that tendencies to attack small moving critters are more apparent in dog breeds than in cats. A cat is less likely to hunt for her owner's approval and a pat on the head.