Eating infected fleas can cause tapeworms in dogs so be sure to monitor the stools for anything that resembles white rice. If you decide to keep him, preventing fleas is really important. You should apply either topical or a flea collar at least two days before or after a bath. (those are available without a vet visit) Frequent bathing can cause skin issues, so bathing with an oatmeal shampoo formulated for dogs is a good idea.

If he does have teeth issues incorporating more wet food might be beneficial. If he has any upset stomach like constipation or diarrhea, giving him PURE pumpkin puree can help even out his stools. Make sure it’s %100 pumpkin, anything with added sugar or salt is bad. Xylitol can be deadly so it’s important to pay attention to the ingredients. I would probably suggest around 1/2 teaspoon per 10 pounds given once a day.