Used on a dog's nails (can also be used on cats). I am selling it because the size doesn't fit. It was a little too small for my Maltipoo (4.5kg). It has been disinfected with alcohol. I was very satisfied with this product because I could trim quickly without worrying about cutting too much, which reduced stress. ↓ The following is a quote: ● Choose according to your pet's nails, so you don't have to worry about cutting too much. ● Easy to cut with a conical blade. Force from all directions is concentrated, so it works with light force! ● Silent design that doesn't make a "snap" sound. Safe for pets who dislike the sound of nail clippers. ● The handle is rubber, so it's non-slip.