Pomeranians are fully grown when they reach 1 year of age. Most of them do the majority of their growing before they are 6 months old.
Pomeranian puppies weigh as little as several ounces at birth, with most adults weighing between 3 and 7 pounds when they reach full weight. It takes a lot of energy for these dogs to reach full weight in such a short period of time, which means that puppies must be fed a high-protein diet in order to thrive. Those who decide to share their lives and homes with Pomeranians should ask a vet about the best kind of diet for these dogs at all ages. Fully grown dogs have different nutritional needs than those of puppies.