Small breed dogs, those that weigh no more than 30 pounds as healthy adults, stop growing at 10 months; by 12 months, they reach their full adult size. Medium breeds, those weighing up to 80 pounds as adults, may reach their adult size between 12 and 16 months of age. Sep 03, 2014 · Small breeds that weigh no more than 30 pounds as healthy adults, typically stop growing at 10 months, and by 12 months, they reach their full adult size. Medium breeds weighing up to 80 pounds as adults, will typically reach their full size between 12 and 16 months of age, while large and giant breeds weighing over 80 pounds, may reach their adult size between 18 months and 2 years old.
Small dogs reach their adult height between 10 to 12 months of age. Small breeds are dogs up to 30 pounds when fully grown. Medium breeds reach full growth between 12 to 16 months of age. Medium breeds are dogs between 30 and 80 pounds when fully grown. Large dogs or large breeds can take as long as two years to reach their final size. Giant Breeds. Dogs like Mastiffs, Great Pyrenees, Saint Bernards and Newfoundlands take the longest to reach full size. Their basic framework is in place by about 18 months old, but it can take until age two or three for them to reach full weight and muscle mass.Author: Kelly Roper.
Puppies mature into adults at a different time, which means that a large dog breed will mature into an adult at about 15 months, while smaller breeds will be puppies for only 9 months. So, you’ll need to feed a larger dog breed specially formulated puppy food for much longer than you would a . But by the time he turns one year old, he will have grown by leaps and bounds and, for the most part, will be considered an adult. Of course, it all depends on his size and breed. Larger dog breeds often don’t reach full physical and emotional development until they’re closer to two years of age.