Kathleen the Killer Kat

We have a little cat named Kathleen. She came to us in the New Year courtesy of the streets of Toronto and was small and anguished. Well she's twice the size now and confident enough to be left on her own for a few hours without having a meltdown. Since the nice weather arrived Kathleen has ventured outside a few times and discovered birds and squirrels. As she is a leaping,climbing sort of cat this has brought a whole new meaning to life. I was hoping for a greater interest in mice but it seems not. Her first near miss was a black squirrel her own size who got away by the skin of his chinny- chin- chin and spent a good ten minutes up a tree complaining about it all. So far no kills but I fear for the livestock around here and I expect to be hearing from the neighbours as well. Kathleen has little respect for boundaries. Fences are to be climbed and hedges to be crawled through. I have been looking around for a little brother for her which might keep her in the house more as she would have someone to play with besides me. I have my limits, teeth and claws hurt. This would unfortunately double the killing capacity once Bro was old enough to go out. On the horns of a dilemma once again.