Sandy jumped out of my arms once and left a scratch right across my wrist. There is a scar there now. The only one I have, and it looks like I atempted suicide. I think its cool. I proptly cut her nails though. The best way to do it is to put them on the floor and sit on them (without sitting on them) and bend their paw back so they can not see what you are doing. It is also harder for them to scratch you cause they are pinned, and one paw is behind them. You still have to be carefull, but Sandy is calmer if she can not see me cutting her nails, or hear them being cliped. I talk to cover up the sound. I use people nail clipers to cut the cats and ferrets nails.