How many teeth should you have?
An adult with all their teeth should have 32.
A human adult can have anywhere from 14 to 16 teeth in the upper jaw. 14 would be considered the minimum with the possibility of the other 1 or 2 teeth being the development of third molars; teeth which are commonly called "wisdom teeth". Wisdom teeth may or may not grow in, but 14 teeth should be what is expected at the very least.
at around 6 months they should have replaced all there teeth with adult teeth, like human babys do, they should never loose adult teeth, remember to brush your dogs teeth to prevent gum deaseas, that can cause heart problems like with people >.< call your vet if your dog has very dirty teeth and/or bad breath.