At What Age Does a Dog Reach Full Height?

by Susan Paretts Google
Small dog breeds grow much more quickly than large breeds.

Small dog breeds grow much more quickly than large breeds.

Apple Tree House/Lifesize/Getty Images

Puppies of different sizes and breeds grow at different rates, some more quickly than others. Most dogs reach adult height at 1 year of age, large and giant breeds may take twice as long to reach their full height.

Growth Rates

A puppy grows most rapidly during his first 6 months, after which growth continues at a slower pace as he begins to mature into an adult. By the time he reaches around 9 months old, a toy or small breed puppy will likely be at his full adult height, according to "Your Puppy, Your Dog: A Kid's Guide to Raising a Happy, Healthy Dog." Medium-size breeds usually reach their full height at around 1 year old. Large and giant breeds grow much more slowly; they won't reach full size until between 18 months and 2 years of age.

Adjusting to Growth

Because many pups are still growing until they reach 2 years, the Dogster website recommends purchasing adjustable collars, harnesses, crates and coats that will grow along with your pooch so you're not constantly purchasing and replacing size-appropriate items as he matures. Even after Fido reaches his full height, he may still continue to gain weight for up to an additional year during his adolescence, according to the Akolade Dobermans website.

Photo Credits

  • Apple Tree House/Lifesize/Getty Images

About the Author

Based in Las Vegas, Susan Paretts has been writing since 1998. She writes about many subjects including pets, crafts, television, shopping and going green. Her articles, short stories and reviews have appeared in "The Southern California Anthology" and on Epinions. Paretts holds a Master of Professional Writing from the University of Southern California.

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