I bought the peticure petite online, because we accidently cut our little Lacie's nails several times, and she fought us and we were afraid to do it. I took her to a Vet two times because they used the "dremmel" tool. It took four people to hold her she was so terrified. I started holding the peticure against her when I brushed her each day, then turned it on and held it close. I did this for a few weeks until she got used to it, then tried it on a nail. She didn't like it, so I just did it for a few seconds, gave her a special treat she get's only when her nails are being cut, and quit. I have been doing this everyday, doing two nails now. She hardly fights us at all now, I talk to her and reassure her all the time. There has been a huge improvement, so it pays to take it very slow and let them get used to it, and see it doesn't hurt. I have three suggestions, be sure the hair is cut around the feet, so it doesn't get caught, and I would not get the petite. The company suggests it for small dogs, but Lacie's nails are very hard, and I think the larger tool would be quicker. The third, is get the recharable one, not a battery one. It needs to have a strong charge to do the job so I plug it in every time I use it. I don't think the batterys would keep a strong enough charge, and by the time you keep buying batteries, you might as well get a good one. You will probably need someone to hold you pet, and another person to use the tool. I paid $18 each time at the Vets, so it pays for itself in no time. The one I got online, has a video on the site showing you how to do it.