Dogs that are working and prone to health issues

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Mastiffs are loyal, protective dogs, famous for their extra-large size and propensity for drooling. Learn more about living with mastiffs.
Bernese mountain dogs are smart, hardworking, and loyal dogs who love to spend time with their human family. Learn more about living with Bernese mountain dogs.
Bullmastiff dogs are loyal, trusting, and gentle giants that offer not only great companionship, but also intense protection. If you’re fond of big, smart dogs with sweet dispositions, learn more about the lovable bullmastiff.
Known as a national treasure in Japan, Akitas have wooed American dog lovers with their loyalty, watchfulness, and graceful strength. Learn more about living with the Akita.
Few dogs fit the description of majestic but gentle giants as well as the loving, sweet, and mild-tempered Newfoundland. Easy-going with children and protective of their families, learn why they’re devoted pets.
Patient and caring Saint Bernards aren’t just known for their massive size—they have huge hearts, too, full of devotion for their human companions. Intelligent, mellow, and playful, learn how they can protect and adore a family like yours.
Great Danes are enormous, gentle dogs that love spending time with their family, whether guarding them, or lazing at their elbows. Is this gentle gargantuan dog breed right for you?
 Rottweilers are smart, hard-working dogs that can be gentle and devoted when trained well. Learn more about living with Rottweilers.
Muscular, athletic boxers are fun, cuddly, loyal dogs that love being part of an active family. They thrive in social environments and are powerful protectors. Learn whether these playful pups are the right fit for your lifestyle.