I wish I'd had a cat a week or so ago, then the rats that dug up the floor in my shed might have gone away instead of me having to spend a lot of money on poison. It's the hazard of living in a rural area - it seems every time an old building gets taken down I end up with rattus rattus moving in!
I am planning on getting a kitten in a few months - my first - and hope it will get on ok with the dog, who is not aggressive towards them as yet.