Next time, place a tuna - soaked piece of gauze over your finger, and rub the animal's gums and teeth. (fox19.com)
For pets that won't accept a toothbrush, try wrapping a small piece of gauze around your finger. (mobileanimalclinicpc.com)
If your cat won't tolerate a toothbrush, a small piece of washcloth or an appropriate piece of gauze (such as from a first aid kit) wrapped around your finger can be used. (tampabayvets.net)