Dogs come in every shape and every size, and that is part of their charm. We have small dog breeds, and we have large dog breeds, too. For families who want something in between, medium-sized dog breeds often feel just right.
Dogs vary widely in size, temperament, and purpose, from tiny lap dogs to active working companions. All domestic dogs share many traits, yet people bred them for different jobs and places over thousands of years.
Because of this, each dog breed can fill a special role in family life, from calm family pets to active working dog breed partners.
Many pet owners look for medium dog breeds that typically weigh under 45 pounds because they fit busy homes with ease. These medium-sized breeds can suit active households, offer great companions for kids, and form strong bonds with family life.
Before you decide, think about regular exercise, mental stimulation, and proper training. A loyal companion thrives when daily routines, care, and love stay consistent.
So here we go with the list of top dog breeds under 45 pounds for families.
Top Dog Breeds Under 45 Pounds for Families
1. Whippet

The Whippet is among the best medium-sized dog breeds, and it brings a fun mix of speed and calm. This dog is a sighthound breed. It closely resembles the Greyhound and the smaller Italian Greyhound.
According to the American Kennel Club, people often call it the “poor man’s horse” because of its love for running. The Whippet is one of the fastest dog breeds. It can reach speeds up to 35 mph. Yet at home, this medium dog feels calm and gentle.
This breed needs regular exercise each day. Short bursts of play work best. A long sprint, then rest, feels perfect for this dog. Long, slow workouts do not suit its style. A safe yard helps a lot. Open space lets this medium dog stretch its legs.

These popular dogs also love organized activities like lure coursing and agility. Such games keep both body and mind happy. Whippets handle calm time well. They enjoy soft beds and close company. They are playful, affectionate, and easy to live with.
This low-maintenance dog breed fits relaxed homes. Their friendly and outgoing nature helps with kids and guests. For families who enjoy light activity and cozy evenings, this dog breed can be a great family pet.
2. Drever

The Drever is a short-legged scent hound from Sweden, originally bred for hunting deer and other game. This medium-sized dog is descended from the Westphalian Dachsbracke, a type of German hound called a bracke.

The name “Drever” was chosen through a contest in 1947, reflecting its unique heritage. Its history as a hunting companion still shapes its behavior today. Drevers are highly skilled hunters, independent, and sometimes stubborn. They are alert, naturally protective, and form strong bonds with their families.
This breed thrives with structure. Regular routines, clear rules, and consistent training help guide its energetic nature. They enjoy daily walks and love to explore outdoors, which keeps both body and mind active.
Drevers tend to get along well with other dogs and often show affection toward people. Their short coat makes grooming simple, but pet parents should watch their weight, as this energetic dog can easily gain extra pounds.
For families who enjoy active walks and an intelligent, alert companion, the Drever is a loyal and engaging choice.
3. Cocker Spaniel

The Cocker Spaniel belongs to two breeds of the Spaniel type: the American Cocker Spaniel and the English Cocker Spaniel. Both are commonly called Cocker Spaniel in their countries of origin. This medium-sized dog is smart, happy, and gentle, making it one of the world’s best-loved breeds.
Known as the smallest member of the sporting dog family, Cocker Spaniels come in several specific color varieties, including black, black with tan points, parti-color, and any solid color other than black.

Cocker Spaniels thrive on social company and love family time. Their loyal nature helps them connect deeply with people, including older children. They are friendly with guests and often enjoy meeting new faces.
Routines help this breed feel safe and secure, reducing stress and separation anxiety, which can occur if they are left alone for long periods.
According to Purina, their loving personality also allows them to get along with other small animals, making them wonderful companions for families who enjoy interaction and active social lives.
4. Glen Of Imaal Terrier

The Glen of Imaal Terrier is a bold, gentle, and spirited medium dog breed. This breed has a dense double coat with a wiry texture, and is known for its strong build designed for hard work.
Recognized as the AKC’s 153rd breed, the Glen combines bravery with a docile temperament. It is less noisy than many terriers, making it an excellent choice for families who prefer a calmer home environment.
This breed handles alone time well when given proper physical and mental exercise. Patience works best with Glens, as consistent training allows them to thrive without stress.

PetMD notes that they adore children, but care is needed because their enthusiasm can accidentally bowl over small kids. Healthy and hearty, Glens do not typically face many major health issues.
Families who enjoy daily walks, light outdoor work, and engaging play will find a loyal, independent companion in the Glen of Imaal Terrier.
5. Pembroke Welsh Corgi

The Pembroke Welsh Corgi is one of the most popular medium-sized herding breeds, known for its intelligence and quick learning. This bright, sensitive dog responds exceptionally well to training, especially when lessons are kept short and engaging.
Fun games, treats, and positive reinforcement make learning enjoyable for both the dog and the family. Structure is key for the Corgi. Regular routines and clear expectations help it stay focused and confident.

These friendly dogs thrive when given mental challenges alongside physical activity, which prevents boredom and keeps their sharp minds active.
Famous as the preferred breed of Queen Elizabeth II, who owned more than 30 Royal Corgis during her reign, they are loyal furry friends who enjoy being taught new skills. Families who love teaching and interacting with a clever, eager dog will find the Pembroke Welsh Corgi an ideal addition.
6. Kromfohrlander

The Kromfohrländer is a modern German breed of companion dog that is not very well known, making it a rare and special choice for families. Originating in Germany after World War II, this medium-sized dog comes in two coat types: smooth-haired and rough-haired.
In North America, it is often nicknamed “Grohmi.” Its rarity makes it stand out, but what truly makes this breed special is its affectionate nature and ability to form strong bonds with its owners.
Kromfohrländers adapt well to family routines, thriving when daily schedules are consistent. Early bonding is important, as it helps the dog feel secure and confident in a home environment.
Calm households are ideal, as this breed enjoys quiet family time as much as play and social interaction. With proper care and attention, the Kromfohrländer becomes a loyal, gentle companion that brings a unique and loving presence to any family.
7. Norwegian Buhund

The Norwegian Buhund is a confident and spirited medium-sized dog, known for its thick double coat that protects it in cooler weather. This high-energy breed thrives in outdoor play and loves exploring open spaces, which helps it burn off energy and stay healthy.
Its playful nature makes it a great dog for families who enjoy active lifestyles, while its alert and smart personality keeps it engaged and aware of its surroundings.

Because of its thick coat and high energy needs, the Buhund does best in climates that are cooler, where it can comfortably stay active outdoors. Open yards or access to safe outdoor areas let this breed run, play, and explore freely.
Professional grooming is important to maintain the coat and overall health. For experienced dog owners—or first-time pet parents willing to commit to regular exercise and mental stimulation—the Norwegian Buhund makes a loyal, family-friendly companion that thrives in active homes and loves spending time outdoors.
8. Soft Coated Wheaten Terrier

The Soft Coated Wheaten Terrier is a medium-sized dog known for its unique, silky, wheat-colored coat. This purebred terrier from Ireland requires regular grooming to keep its coat soft, healthy, and free from mats.
Brushing a few times a week not only maintains the coat but also strengthens the bond between dog and family. This daily care time can become a fun, shared routine, turning grooming into quality moments together.

Wheatens are intelligent, lively, and rarely aggressive, making them excellent companions for families with other animals. Moderate exercise keeps their energy balanced, while consistent grooming supports their overall health.
Their loyal and friendly nature makes them an ideal choice for families who enjoy hands-on care and value the connection that comes with daily brushing and attention. For active households who love spending time with their dog, the Soft Coated Wheaten Terrier is both affectionate and rewarding to care for.
9. Staffordshire Bull Terrier

The Staffordshire Bull Terrier is a joyful and loyal medium-sized dog that has won many hearts as a family companion. This breed has a strong, muscular build yet carries a friendly, affectionate nature that surprises many people at first glance.
This breed forms strong bonds with family members. Staffies often seek out close contact and love being part of daily life. They are especially good with children, earning them the affectionate nickname “nanny dog” in some circles.
Despite their sturdy look, Staffordshire Bull Terriers are great family pets and love playtime, games, and interaction with people. They enjoy regular walks, moderate exercise, and activities that let them show off their enthusiastic personality.

Socialization helps them feel at ease with other dogs and other pets, and consistent training builds confidence and good manners. Grooming needs for this breed are simple thanks to a short, smooth coat.
A quick brush once a week keeps them looking sharp and creates more bonding moments. For active families who value loyal dogs with an outgoing nature and lots of love to give, the Staffordshire Bull Terrier shines as an affectionate companion.
Conclusion
Choosing the right dog for your family goes beyond looks—size matters.
Medium dog breeds often strike the perfect balance between manageability and playfulness, fitting a variety of family lifestyles.
Each breed brings unique traits, from energetic and active companions to calm, affectionate friends. Matching a dog’s energy level with your household routine ensures happier days for both pet and family. Before making a decision, spend time meeting different breeds in person.
Feeling their personalities firsthand helps you find a furry friend who truly fits your home and heart.
