Best Medium-Sized Dog Breeds

The best medium-sized dog breeds can offer a practical balance between the compact size of a small dog and the strength and activity level of a larger breed. Cocker Spaniels, Whippets, Pembroke Welsh Corgis, Shetland Sheepdogs, Bulldogs, and Brittanys are just a few examples, but they have very different personalities and care requirements. The right breed depends on your family, activity level, living space, grooming preferences, and training experience. For more insight here best medium sized dogs

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What Is a Medium-Sized Dog?

“Medium-sized” is a broad category rather than a single precise size. Different organizations and breed guides can use somewhat different measurements, and medium dogs can have very different body shapes.

The American Kennel Club describes medium dogs as a useful middle ground between very small and very large breeds. Its medium-dog category includes calmer breeds such as the Bulldog and Whippet as well as energetic breeds such as the Brittany and Shetland Sheepdog. 

When choosing a medium-sized breed, consider: Best Medium-Sized Dog Breeds

A medium-sized dog can be an excellent companion, but size alone does not tell you what living with the dog will be like.

15 Best Medium-Sized Dog Breeds

1. Cocker Spaniel

The Cocker Spaniel is one of the most popular medium-sized companion choices for people who want an affectionate dog with an active side. The AKC describes Cocker Spaniels as intelligent, gentle, devoted dogs that can do well as family companions. 

They enjoy walks, play, training, and spending time with their owners.

Cocker Spaniel care includes: Best Medium-Sized Dog Breeds

Their beautiful coat is a major attraction, but it also means grooming should be part of the normal weekly routine.

Best for: Families and owners who want an affectionate, moderately active companion.

2. Whippet

The Whippet is an excellent example of how appearance can be misleading. It is an athletic dog capable of impressive speed, yet it can also be remarkably relaxed inside the home.

The AKC describes Whippets as affectionate, adaptable, intelligent, and quiet, and notes that they can adapt to apartment or larger-home living. 

Why people like Whippets:

A Whippet still needs opportunities for appropriate exercise, but it may not demand constant activity once its needs have been met.

Best for: Owners who want an athletic dog that can also settle indoors.

3. Pembroke Welsh Corgi

The Pembroke Welsh Corgi is a compact herding dog with short legs, a sturdy body, and a confident personality.

The AKC describes Pembrokes as bold and friendly and notes that they can adapt to different living situations when given regular exercise. 

Care priorities include: Best Medium-Sized Dog Breeds

Their low-to-the-ground body makes them look smaller than many medium dogs, but they are active herding dogs with plenty of energy.

Best for: Families and owners who want a compact, intelligent, active companion.

4. Shetland Sheepdog

The Shetland Sheepdog, commonly called the Sheltie, is a highly intelligent herding breed known for being alert, loyal, and trainable. 

Shelties can excel in obedience, agility, and other activities that allow them to use their minds.

Expect: Best Medium-Sized Dog Breeds

Their intelligence is one of their biggest strengths, but it also means they benefit from having things to learn and do.

Best for: Active owners who enjoy training and interactive activities.

5. Bulldog

The Bulldog is a medium-sized breed with a very different lifestyle from energetic herding and sporting dogs.

The AKC describes Bulldogs as gentle, protective, and family-oriented and notes that they generally require relatively little exercise. 

Potential advantages: Best Medium-Sized Dog Breeds

However, the Bulldog’s short-faced structure means owners should pay particular attention to heat, exercise tolerance, weight, breathing, and overall health.

Best for: Households looking for a more relaxed companion and prepared for breed-specific care.

6. Brittany

The Brittany is a medium-sized sporting breed designed for activity.

The AKC describes Brittanys as strong, quick, agile, happy, alert, and willing, with daily activity being an important part of their lifestyle. 

A Brittany can be an excellent companion for someone who enjoys: Best Medium-Sized Dog Breeds

This breed is better suited to an active lifestyle than a household looking for a dog that spends most of the day resting.

Best for: Outdoor enthusiasts and active families.

7. English Springer Spaniel

The English Springer Spaniel is an energetic sporting breed with a cheerful, affectionate personality.

According to the AKC, Springers have considerable endurance and need daily exercise. Their coat also requires regular brushing. 

Daily needs may include: Best Medium-Sized Dog Breeds

They can make excellent family companions when their physical and mental needs are included in the household routine.

Best for: Active families that want an affectionate sporting dog.

8. Border Collie

The Border Collie is famous for its intelligence and work ethic. It is often considered one of the most demanding medium-sized breeds for exercise and mental stimulation.

The AKC describes Border Collies as highly intelligent working dogs that need substantial exercise and a job or meaningful activity. 

Activities that may suit them include: Best Medium-Sized Dog Breeds

A Border Collie should not be selected simply because it is attractive or intelligent. Its need for activity and engagement can be substantial.

Best for: Experienced, active owners who enjoy training and dog sports.

9. Australian Shepherd

The Australian Shepherd is an energetic, intelligent herding breed with a strong working background.

These dogs generally benefit from both physical exercise and mental challenges.

A suitable routine can include: Best Medium-Sized Dog Breeds

An Australian Shepherd that receives insufficient stimulation may look for its own activities, which may not be the behavior an owner wants.

Best for: Active families and owners who want a highly interactive dog.

10. Australian Cattle Dog

The Australian Cattle Dog is compact, muscular, intelligent, and built for demanding work.

Its medium size makes it physically manageable compared with many large working breeds, but its energy and working instincts can be considerable.

Important needs include: Best Medium-Sized Dog Breeds

This is a breed for an owner who wants an active working-style companion rather than a passive household pet.

Best for: Experienced, active owners.

11. Standard Schnauzer

The Standard Schnauzer is a medium-sized breed with a distinctive wiry coat and an alert, intelligent personality.

It can be an engaging companion for owners who enjoy training and activities.

Care considerations: Best Medium-Sized Dog Breeds

The breed’s wiry coat has a different grooming routine from a short-coated dog and may require professional grooming depending on how it is maintained.

Best for: Owners looking for an intelligent, active dog with a distinctive appearance.

12. Keeshond

The Keeshond is a medium-sized spitz breed recognized for its thick double coat and expressive face.

Keeshonden can be affectionate and family-oriented, but their dense coat means owners need to be prepared for regular brushing.

Expect: Best Medium-Sized Dog Breeds

Their fluffy appearance is appealing, but coat maintenance should be considered before choosing one.

Best for: Families that enjoy affectionate dogs and do not mind regular grooming.

13. English Cocker Spaniel

The English Cocker Spaniel is a medium-sized sporting dog with an affectionate and energetic personality.

It can suit families that want a dog capable of enjoying outdoor activities while remaining closely connected to its owners.

Good activities include: Best Medium-Sized Dog Breeds

Like other spaniels, its coat and ears need regular care.

Best for: Active families and owners who enjoy sporting breeds.

14. Portuguese Water Dog

The Portuguese Water Dog is a medium-sized working breed with an athletic build and a curly or wavy coat.

It historically worked around water, and modern dogs often enjoy active lifestyles.

Care requirements include: Best Medium-Sized Dog Breeds

The coat can be maintained in different styles, but neither option eliminates the need for regular grooming.

Best for: Active households prepared to invest time in exercise and coat care.

15. Basset Hound

The Basset Hound has a distinctive long body, short legs, and exceptionally recognizable ears. Although its body is low to the ground, it is generally considered a medium-sized breed.

The AKC includes Basset Hounds among its medium-sized breeds. 

Basset Hounds are scent hounds, so their world revolves heavily around their noses.

Care considerations: Best Medium-Sized Dog Breeds

Their relaxed appearance can make them seem like effortless pets, but their scent-driven nature can make outdoor walks an adventure.

Best for: Owners who appreciate laid-back hounds and are comfortable with scent-driven behavior.

Best Medium-Sized Dog Breeds

Which Medium-Sized Dogs Are Best for Families?

Several medium breeds can work well in family homes, but the ideal choice depends on the children’s ages and the family’s daily routine.

The AKC highlights the Cocker Spaniel, Bulldog, Pembroke Welsh Corgi, and other medium breeds as family-friendly options, while also emphasizing that activity levels differ considerably between breeds. 

Families should consider: Best Medium-Sized Dog Breeds

For example, a family that enjoys hiking may be better matched with a Brittany than a household that mainly wants a relaxed indoor companion.

Medium Dogs and Young Children

A medium-sized dog can be sturdy enough for normal family activity, but no breed should be assumed to be automatically safe or suitable for every child.

Children should be taught to:Best Medium-Sized Dog Breeds

Adults should supervise young children around dogs regardless of breed.

Which Medium Dogs Are Best for Active Owners?

If your ideal weekend includes hiking, running, long walks, or dog sports, look closely at athletic medium breeds.

Potential choices include: Best Medium-Sized Dog Breeds

These dogs differ in exactly how they use their energy. A Border Collie may want complex mental work, while a Brittany may thrive on outdoor activity and retrieving games. The AKC’s medium-dog guide emphasizes this wide range of activity levels. 

Which Medium-Sized Dogs Are Calmer?

Not every medium dog is an athlete.

The AKC specifically identifies the Bulldog and Whippet as examples of calmer medium-sized breeds, contrasting them with more energetic breeds such as the Brittany and Shetland Sheepdog. 

Potential choices for a more relaxed household include: Best Medium-Sized Dog Breeds

However, individual temperament varies. A breed description should be treated as a general guide rather than a guarantee.

Which Medium Dogs Are Easy to Groom?

Coat type can make a big difference.

Relatively simple coats

More demanding coats

Short hair may reduce brushing time, but all dogs still need basic grooming such as nail care, dental care, bathing when needed, and routine health checks.

Are Medium-Sized Dogs Good for Apartments?

Some are, but the answer depends more on lifestyle than size.

The Whippet is a useful example. Despite being athletic, the AKC describes it as adaptable to apartment or larger-home living. 

Before choosing a medium dog for an apartment, consider: Best Medium-Sized Dog Breeds

A calm medium dog can sometimes be easier in an apartment than a smaller but highly energetic dog.

How Much Exercise Does a Medium Dog Need?

There is no universal exercise requirement for all medium breeds.

For example: Best Medium-Sized Dog Breeds

Lower activity: Best Medium-Sized Dog Breeds
Bulldog

Moderate but athletic: Best Medium-Sized Dog Breeds
Whippet, Cocker Spaniel

High activity: Best Medium-Sized Dog Breeds
Brittany, Australian Shepherd

Very high mental and physical demands:
Border Collie

The AKC specifically describes medium dogs as ranging from relatively calm breeds to highly energetic working and sporting dogs. 

Age and individual health also matter. Puppies, adults, and senior dogs do not necessarily need the same routine.

Common Mistake: Choosing a Medium Dog by Appearance

A medium-sized dog may look perfect in a photograph, but appearance tells you little about what everyday ownership will require.

Before choosing a breed, ask:

These questions can help narrow the choices much more effectively than looks alone.

Medium-Sized Dog vs. Small Dog

Medium dogs can provide a useful middle ground for people who find toy breeds too delicate and large breeds too physically demanding.

Compared with many small dogs, medium breeds may offer:

But medium dogs can still have significant exercise and training needs.

A 35-pound Border Collie and a similarly sized relaxed companion can have completely different lifestyles.

Medium-Sized Dog vs. Large Dog

Medium dogs may require less physical space than large breeds, but they are not necessarily easier.

Potential advantages include:

The key is still matching the individual breed to your lifestyle.

FAQ About the Best Medium-Sized Dog Breeds

What is the best medium-sized dog breed?

There is no single best breed for every household. Cocker Spaniels, Whippets, Corgis, Bulldogs, and other medium breeds can suit different lifestyles. The right choice depends on temperament, exercise, grooming, training, and family needs.

What is the best medium-sized dog for a family?

Cocker Spaniels, Pembroke Welsh Corgis, Bulldogs, and some other medium breeds can be good family companions. Families should consider children’s ages, the dog’s energy level, and the time available for training and exercise. 

What is the calmest medium-sized dog?

The Whippet and Bulldog are examples of medium breeds that can have relatively calm lifestyles. The AKC specifically identifies both as calmer medium-sized dogs, although individual temperament varies. 

What is the best medium dog for an active family?

Brittanys, Australian Shepherds, Border Collies, Australian Cattle Dogs, and English Springer Spaniels can suit active households prepared to provide substantial exercise and mental stimulation. 

Are medium-sized dogs easy to train?

Trainability varies greatly. Shetland Sheepdogs and Border Collies, for example, are highly intelligent and responsive, while some independent breeds may require more patience. Consistent, reward-based training is useful across breeds.

Are medium-sized dogs good apartment dogs?

Some can be. The Whippet is one example of an athletic medium breed that can adapt to apartment living when its exercise needs are met. 

The Bottom Line

The best medium-sized dog breeds offer an impressive range of personalities and lifestyles. A Whippet may suit someone looking for an athletic dog that can relax indoors, while a Cocker Spaniel can appeal to families wanting an affectionate sporting companion. Active owners may prefer a Brittany, Australian Shepherd, or Border Collie, while those wanting a more relaxed dog may consider a Bulldog or another lower-energy breed. 

The most important factor is not simply finding a popular medium-sized breed. It is finding a dog whose temperament, exercise needs, grooming requirements, training demands, and family lifestyle match your everyday life. When those pieces fit together, a medium-sized dog can become a rewarding and long-term family companion.