RYERCAT Dual Sided Cat Dental Toothbrush, Ocean; Make toothbrushing less of a pain for your cat with the RYERCAT Dual Sided Cat Dental Toothbrush. Most straight toothbrushes hit the Jacobson’s Organ—a big open nerve that sits behind cats’ front teeth—so toothbrushing is an uncomfortable and painful task for all involved. Not this one, though. Specially designed to avoid hitting the Jacobson’s organ, this curved toothbrush helps make toothbrushing a whole lot easier for you and your furry companion. Plus, its compact two-in-one design is perfect for cats of all ages and sizes. Get one for each of your kitties so no one has to share!