bout twice a week depending on how much human food u give them. also brush them after they puke. not right away though cause they will think it's punishment. the stomach acid will rot teeth. same with humans
Once weekly is probably enough (with dog toothpaste not yours) but if you buy your dog hard bones, rawhide treats and hard rubber toys meant for dogs it will really help to keep your dog's teeth and gums healthy
Prob everyday as humans brush their teeth and that is desucksing my dogs teeth has black and some stuff on them it is desusking i and u should brush ur dogs teeth when you brush ur teeth and they would probly have white teeth plus winning teeth :-)
Brushing a dogs teeth is stupid! They are dogs, not humans. How do you think wolves get along in the wild without brushing their teeth? I have had plenty of dogs before and have never had any tooth problems with any of my dogs. It is not necessary at all.
From experience you shouldn't have to brush your dogs teeth. You should give him greenies or some other hard treat. It is effective and easier than brushing their teeth. You can also use some type of spray which is good to do with the treats.