I was really impressed with this product, it was smaller and quieter than I had been expecting, I didn't even need to charge it up as it worked straight out of the box. I tried it on my little skinny pig first, she tolerated it really well for a first attempt, I held her nail close to the grinder and she put it on and then pulled it back when it was done. I then tried it on one of my dogs, she wasn't as impressed, she wriggled about a bit, but didn't get anywhere near as upset as with the clippers.