The Tooth-Hugger has unique bumps, nubs, and ridges that gently cleans all exposed surfaces of pet's teeth. The inner rounded nubs gently scrub the top, front and back surfaces of the tooth, while the outer edge massages the gums and loosens material caught at the gum line. The outer ridges and nubs clean the tongue and cheeks of pets. The firm yet flexible brush head adjusts to create the best angle for cleaning.