Hi there my dog has 2 extra teeth that have grew through behind his bottom teeth all his puppy teeth fell out. Should I be worried? He seems fine

What you are describing is actually retained baby teeth in the front and adult teeth that erupted behind these that did not succesffuly push out the baby teeth. Retained deciduous teeth aren't necessarily a serious matter initially, but over time they cause debris and foodstuffs to trap in between the overcrowded area and this causes advanced dental disease and bacteria problems later on for your pet. It is always advised and recommended to remove the retained baby teeth in the near future to avoid these complications, and this is often best done during another surgical procedure such as during a spay or neuter, because the retained baby teeth will require the pet to be under general anesthesia in order to be done safely and efficiently. In the meantime I would encourage you to brush your puppy's teeth daily to help remove foodstuffs from becoming entrapped.

These are probably 2 puppy teeth that didn't fall, if he is over 6 months old they are not likely to fall. if he isn't neutered and you plan to neuter him soon, mention this to the vet and ask him to remove those teeth during the surgery.

I would give it some more time. They won't usually get an infection from not loosing their baby teeth right away. It sometimes takes a little more time before the baby teeth fall out. If they still haven't fallen out in a couple of months once all of his adult teeth have come in, I would have your vet take a look. Your vet will likely recommend to have them removed because long term they can cause crowding issues and infection. If you plan to neuter Ozzy and haven't already done so, they will likely recommend to have the baby teeth removed at this time. I hope this helps!

It looks like his adult canine teeth (the long "fangs") are still in the process of coming in, so the baby teeth may come out on their own by the time this is finished. If your pup is going to be neutered sometime soon, your vet can easily remove the baby teeth while he's asleep for the neuter. If not, I would continue to monitor. If the baby teeth haven't fallen out by the time he's a year old, then I would schedule an appointment to have them removed. They will cause problems with the adult teeth if they're allowed to stay in place much longer than that.