Predatory Cat Behavior

My almost two year old spayed female cat is… to put it bluntly… a cold blooded killer. We live in a semi-rural area, and she almost daily is catching mice, lizards, large insects and now full grown birds. Last night there were feathers all over the house. Sometimes the victim is still alive when we get home… usually there are only pieces I can use for identification. It’s become a real problem.

I don’t know how she does it, she’s pretty small for a cat, but she is the most efficient hunter I have ever seen. Now before you say she’s just doing what comes naturally, keep in mind that this is an almost daily occurance.

Now I have had cats before, and sometimes they would drag something into the house, but it wasn’t very often and after a while they got the idea that they weren’t “pleasing us” by doing this. My current cat is relentless.

I’ve tried the bell on the collar trick but that hasn’t even slowed her down. I could lock her up in the house all day, but when I’ve done that in the past she eats a lot more and sleeps all the time (she gets bored). I don’t want to turn her into one of those unhealthly overweight cats I see at other people’s houses.

I suppose I could lock her out of the house all day, but then she won’t have access to food and water and male cats sometimes chase her back into the house. Remembering to lock her out each day is going to be hard too… and sometimes she sneaks critters in while we’re asleep. We have a cat door so she can come and go as she pleases.

Getting another cat for her to distract her isn’t an option… we tried that and she drove the other cat away.

Help! I’m afraid to come home at night now since invariable I have walk around the house and play “what did the cat kill today”! Any ideas?