Sometimes we wish that puppies would stay small forever, but it’s inevitable that they will grow up to be a mature dog. If you have a puppy, especially a mixed breed, you may wonder when your dog will reach its fully grown size. Is your pup still growing? Will he get even bigger?
Many of us wonder: when do dogs stop growing?
Truth be told, the answer varies by the size of the dog. Generally, smaller dogs will reach their full-grown size at a younger age than larger dogs.
Dog Breed Sizes
It’s safe to say that small dog breeds (Chihuahuas) have reached their full size by 10 months to 1 year of age.
Small-medium dog breeds (Toy Poodles, Beagles, Miniature Schnauzers) will finish growth by about 12-15 months and will have reached their full weight by about 18 months.
Medium-large dog breeds (Collies, Labrador Retrievers, Boxers) are at full growth by about 18 months and at their full weight by about 2 years of age.
Giant dog breeds (Great Danes, Mastiffs) may take up to three years to reach their full weight, though they should be fully grown into their paws by about 18 months.
A good indicator for giant dog breeds is the size of their paws. When they are puppies, big dog breeds appear to have over-sized paws that look disproportional to the rest of the body. However, after fully “growing into” their paws, they will look better proportioned.
While the timeline will vary by each pet, this should give you a good indication of when your puppy will be fully grown.
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