If you do decide to get a .22 or any other sort of firearm, PLEASE take a firearms safety course before you do! Even if you *only* plan on using a .22. They're just as deadly if mishandled as a "big" gun. The axe is the best thing for your chickens. For the occasional wounded cat on the road, a good, strong rap to the head with the axe handle would do the job and be just as humane, I think. I don't think I could do it myself (I'm more likely to want to fix the poor thing, which isn't always in the best interest of the animal), but that's what I keep DH around for!