My sister used to breed Akitas. She had a barn with kennels for her dogs. Mice infested the barn, so she got some cats. After a few months, the cats started disappearing, and she couldn't understand why. One day, after feeding the dogs, she stayed out in the barn to do some chores, and noticed that one of her dogs didn't quite finish its kibble. There were 3 or 4 pieces left in the bowl. She thought that was strange, so she watched. About 10 minutes later, mice came out and started feeding on the kibble. The dog just watched. A few minutes later, a cat pounced on the mice, and the dog pounced on the cat. She quit leaving kibble in that dog's dish.