Often, the pup's teeth will fall out while eating or playing, so they are often swallowed and you may not notice that it has happened. (See also: When a Beagle swallows something
If at the age
of 6 months, if your puppy is still holding onto all of his puppy teeth, you should have a veterinarian perform a dental checkup.
In some cases, a adult tooth will begin to grow in while the puppy tooth still remains. This will create "2 rows" of teeth and can seriously affect the permanent bite of the dog. If this happens, the veterinarian should remove the puppy tooth in order to allow the adult tooth to grow into the correct spot. Even if it has begun descending, once it has room, it will usually move over into the proper position.
The loss of puppy teeth and the growth of adult teeth normally happen in this order:
4 Months old - the incisors grow in
5 months old - the canine teeth grow in
6 months old - the molars grow in