Some dogs have tongues that are too big
Dogs can be born with overly large tongues, but these cases are quite rare. Also, this affection is called macroglossia. “There are some rare situations where puppies are born with tongues that are too large to do normal functions such as suckling at the teat,” Reiter says.
Boxers are more likely to have larger tongues, but they can live with this condition without having any problems. Anyway, your vet can surgically solve the problem and give you special treatments, but only if necessary.