My hubby thought a pellet gun would just sting it. I really don't want to kill it if I can help it. And I actually don't know who this cat belongs to. We have lots of stray domestic cats in our area. Thanks for the info on the .22. We don't have one but know plenty who do, and my daughter just finish hunter safety so if it comes to that, she said she would do the deed. I'm also going to check with my neighbor anyway.If you intend to kill the cat, you'd be better off using a .22. Contrary to popular belief, pellet guns often don't just "sting". They can cause serious injury or death. In fact, they are often advertised as for killing squirrels and other small game. I actually use a pellet gun myself to kill a chicken for butchering. Mind you, I am shooting point blank to the head, but one pellet is all it takes. My point being here is with a pellet gun, you may end up not killing the cat but seriously injuring it and causing it a slow painful death. Use a real gun or have a talk with your neighbor about your intentions if they don't control their cat.