Medium-sized dogs include some of the most popular breeds in the nation, says the American Kennel Club (AKC), and it's no wonder. Medium-sized dog breeds are the Goldilocks of dogs — not too big, not too small and just right for many prospective pet parents. Learn more about these perfectly sized pooches and whether one of them might be right for you.
How Big Are Medium-Sized Dogs?

Dogs weighing around 30 pounds (14 kg) or less are generally considered small dogs and any breed over 55 pounds (25 kg) is usually considered a large dog. This means that medium dogs span a wide range of body weights. To make it easier to define exactly what size dog you're looking for. Medium-sized dogs can be categorized into three distinct groups:
- Medium small, which includes standard dachshunds, corgis and French bulldogs.
- Medium, which is where you would find beagles and border collies.
- Medium large, which can include Samoyed, shar-peis and female members of larger breeds, such as Airedale terriers and standard poodles, who tend to be smaller than their male counterparts.
Benefits of Medium-Sized Dogs
Medium dogs include a wide range of breeds from just about every AKC-recognized group except the Toy group, which includes all breeds under 10 pounds (4.5 kg). While their temperaments and traits are as varied as their sizes, medium-sized dog breeds in general come with a number of benefits.
Some medium dog breeds can be hardier, sturdier and are large enough to handle vigorous activity better than smaller dogs. If you try to go jogging with a Chihuahua you're likely to end up carrying him most of the way, but a border collie mix would have no trouble keeping up. Medium dogs also require less room, are easier to transport and cost less to feed than large dogs. For many families, this happy middle makes medium mutts the perfect fit.
How to Choose a Medium-Sized Pup
There's a lot more to choosing the right dog than settling on a size. When you're considering welcoming a dog to your family, it's a good idea to factor in his temperament, energy levels and grooming needs to determine whether he will be a good fit. It's also a good idea to make a list of potential dog breeds and then research those breeds to see which will be a good fit in terms of their characteristics.
Keep in mind that mixed breed dogs also come in a wide range of sizes and can make wonderful family companions. If you are looking for a dog of a certain size, talk to a pet adoption counselor at the shelter where you're thinking of adopting. They can help you determine whether a dog's needs and personality are a good match for your living situation.
Here are just a handful of popular medium dog breeds you might want to consider: