Well...we still pursue a little after he gets nippy, but he starts off gentle by kinda mouthing us, but if he starts getting really pissy, then we stop. I do praise him tons when he is relaxing with it around. Today he layed down beside me and I was holding it on in one hand and massaging his feet with the other, and he was fine, but as soon as I get close to his feet he would get all distressed, get up and mouthy. It's not like he runs away and hides. He still stays close to me and just sits there and is fine. He's even fine when we touch it to his nails when it's off.
I guess he must have had some bad nail experiences before we got him.
Prevent a litter
Fix your critter