My 17 year old 🐈, who is afraid of any electric or electronic noise, want intimidated at all by this battery operated motor. She also HATES when I clip her claws. When I used this incredible trimmer, she didn't move an inch and actually went to sleep during her manicure. This trimmer is nothing short of incredible and a god send. Just make sure you don't get your face close when trimming as it does it a good amount of nail particles that will readily float up your nostrils and cause lacking and gagging! Use a small fan to pull away the dust or wear a paper mask. Make sure to follow directions!! Make sure to clean the dining grinder head after EACH 🐾.😃👍🏻