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Bullmastiff vs Border Collie vs Australian Shepherd

Three friendly breeds enter—one emerges as your best match. Use the trait grids below to spot practical differences in lifestyle fit.

Full body image of a Bullmastiff
size

Bullmastiffs are large dogs, weighing 100-130 lbs, with a height of 24-27 inches.

energy level

Bullmastiffs have a low energy level, making them suitable for a more laid-back lifestyle.

exercise needs

Bullmastiffs need regular exercise, such as daily walks and some playtime to keep them healthy.

trainability

Bullmastiffs can be trained but may require patience and consistency due to their stubborn nature.

intelligence

Bullmastiffs are moderately intelligent and can learn basic commands and tricks.

adaptability

Bullmastiffs can adapt to various living situations but may be better suited to larger homes with outdoor space.

with kids

Bullmastiffs are generally good with children, known for their gentle and patient nature.

with other pets

Bullmastiffs generally get along well with other pets, especially when properly socialized.

in cold climates

Bullmastiffs can tolerate cold climates but should be protected from extreme cold.

in hot climates

Bullmastiffs can tolerate hot climates but need extra care to stay cool and avoid overheating.

shedding

Bullmastiffs have a short coat and shed moderately, requiring regular brushing to manage shedding.

grooming

Bullmastiffs require minimal grooming, including occasional brushing and bathing to keep their coats clean and healthy.

bark tendency

Bullmastiffs bark occasionally, usually only when necessary or provoked.

health issues

Bullmastiffs may have some health issues, requiring regular veterinary checkups and preventative care.

Full body image of a Border Collie
size

Border Collies are medium-sized dogs, weighing 30-45 lbs, with a height of 18-22 inches.

energy level

Border Collies have a high energy level, requiring plenty of physical and mental stimulation.

exercise needs

Border Collies need extensive exercise, including daily walks, runs, and mental challenges like training or dog sports.

trainability

Border Collies are highly intelligent and trainable, excelling in obedience and various dog sports.

intelligence

Border Collies are considered one of the most intelligent dog breeds and can learn a wide range of commands and tasks.

adaptability

Border Collies can adapt to different living situations, but they thrive in environments with plenty of space to run and exercise.

with kids

Border Collies can be good with children, but their herding instincts may cause them to nip or chase. Proper supervision and training are essential.

with other pets

Border Collies can get along with other pets, but early socialization and proper training are important to manage their herding instincts.

in cold climates

Border Collies can tolerate colder temperatures thanks to their double coat, but proper protection is necessary during extreme cold.

in hot climates

Border Collies can tolerate hot climates but need to be monitored for signs of overheating during exercise.

shedding

Border Collies have a double coat that sheds seasonally, requiring regular brushing to manage shedding.

grooming

Border Collies require regular grooming, including brushing, bathing, and trimming to keep their coats clean and healthy.

bark tendency

Border Collies have average bark tendencies and may bark for various reasons, such as alerting their owners or during playtime.

health issues

Border Collies may experience some health issues and require additional care and attention, such as regular veterinary checkups, preventative care, and potential medication or treatments.

Full body image of a Australian Shepherd
size

Australian Shepherds are medium-sized dogs, standing 18-23 inches tall and weighing 40-65 lbs.

energy level

Australian Shepherds have high energy levels, requiring plenty of exercise and mental stimulation.

exercise needs

Australian Shepherds need lots of daily exercise, including walks, runs, and activities like agility, herding, or obedience training.

trainability

Australian Shepherds are intelligent and eager to learn, making them highly trainable with positive reinforcement and consistent training.

intelligence

Australian Shepherds are highly intelligent and excel at problem-solving and learning new tasks.

adaptability

Australian Shepherds are adaptable but thrive best in an active household with space to exercise and work.

with kids

Australian Shepherds can be good with children, especially when properly socialized and supervised.

with other pets

Australian Shepherds generally get along well with other pets when properly socialized, although their herding instincts may cause them to chase or herd smaller animals.

in cold climates

Australian Shepherds have a double coat that provides insulation, allowing them to handle colder climates well.

in hot climates

Australian Shepherds can tolerate heat, but they should be provided with shade, water, and limited exercise during the hottest parts of the day.

shedding

Australian Shepherds have a double coat that sheds seasonally, requiring regular grooming to remove dead hair.

grooming

Australian Shepherds require regular grooming, including brushing at least once a week and more frequently during shedding seasons.

bark tendency

Australian Shepherds have average bark tendencies and may bark for various reasons, such as alerting their owners or during playtime.

health issues

Australian Shepherds may experience some health issues and require additional care and attention, such as regular veterinary checkups, preventative care, and potential medication or treatments.