Mastiff

Also called English Mastiff and Old English Mastiff

  • Great with kids
  • Needs space

The Mastiff is a large and powerful breed of dog that was originally bred for guarding and protecting property. They are intelligent, loyal, and protective, and make excellent guard dogs.

Weight
119–249 lb (54–113 kg)
Height at the shoulder
28–36 in (70–91 cm)
Life span
6–10 years
Exercise
About 45 minutes a day
Coat
Short
Origin
England, United Kingdom (ancient/medieval)

Traits

Family and friends

  • Children: Good with children
  • Other dogs: OK with other dogs
  • Strangers: Reserved with strangers

Home and activity

  • Energy: Calm
  • Apartment living: Needs space
  • Barking: Barks a little
  • Training: Fairly easy to train

Care

  • Grooming: Little grooming
  • Shedding: Sheds moderately
  • Drooling: Drools heavily

Temperament

Calm Courageous Dignified Docile Good-natured Protective

Coat colours

Apricot, brindle and fawn

Males and females

MeasureMalesFemales
Weight 161–249 lb (73–113 kg) 119–198 lb (54–90 kg)
Height 30–36 in (76–91 cm) 28–33 in (70–84 cm)

Recognized by

American Kennel Club (AKC), Fédération Cynologique Internationale (FCI), The Kennel Club (UK) (KC) and United Kennel Club (UKC)


Caring for a Mastiff

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Veterinarians

Check-ups and vaccinations through its 6–10 years.

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Dog trainers

Can be stubborn: a trainer helps from the start.

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Pet sitters

Someone to look after it while you’re away.

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Breeds of a similar size

All giant breeds
A Boerboel
Giant

Boerboel

Working Group

  • Weight:110–201 lb (50–91 kg)
  • Life span:10–12 years
A Bullmastiff
Giant

Bullmastiff

Working Group

  • Weight:99–130 lb (45–59 kg)
  • Life span:8–10 years

Sources

Breed details from The Dog API (opens in a new tab).