My dogs got out of hand with their pinch collars on before. Even with great force, the collar never injures them or digs into their skin.

BUT...it does have to be fitted properly. It should be a tad snug, not to big. Some people think they are supposed to be big so that you can slip them over their head. That is not true.

I learned it the hard way. I had put a loose one on this pitbull, Bullet. He got out of hand when he saw a cat, not only did it take several people to restrain him, but when it was all over, he was bleeding on his neck and chin from the collar. Afterwards, I talked to my friend/trainer and learned that I was using pinch collars improperly.

*Just wanted to add that the cat (Ron) was ok.*