Descended from large sled dog breeds, the now-tiny Pomeranian has a long .. These problems can appear in young adult dogs and may lead to blindness if. As we have learned in 'Age', a Pomeranian grows up very quickly. There is no exact official age of becoming a senior. Small toy breed dogs such as the Pom. The Pomeranian is a breed of dog of the Spitz type that is named for the Pomerania region in north-west Poland and north-east Germany in Central Europe. Read facts about the Pomeranian dog breed including information about its personality and They are often at mature size by seven to 10 months of age.