hi mate, i dont have a kerry blue but i was going to get one however, i couldnt find a breeder. the kerry blue are meant to be great workers for hunting badger, fox, rats and mice. but i have been told they can go for cats and many other animals. they are ready to take on any opponents - a necessary attribute when hunting and killing vermin but not so good for a family pet! Some terriers are yappy and are known to nip boisterous children. They can also be quite independent and difficult to train.