This is a brush pen for dental care for pets (dogs, cats, and small animals). It's pen-shaped, so you can easily take care of your pet's teeth! I bought this for my family's house cat, but I ended up buying too many, so I'm selling them! ◎ I do not have any pets at my house. ※ The box has some dents from when it arrived. Please refrain from purchasing if you are concerned about this.