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Your Pet, Our Passion.


A large, muscular, powerful dog, the Mastiff has a broad head and body, a powerful build and legs quite wide apart.

6–12 years
up to 73kg
72–80cm in height when fully grown
Apricot, fawn or brindle
Kennel Club group
The need-to-know
  • Dog suitable for owners with some experience
  • Extra training required
  • Potential health risks
  • Enjoys active walks
  • Enjoys more than two hours of walking a day
  • Large dog
  • Some drool
  • Requires grooming once a week
  • Quiet dog
  • Barks, alerts and may be physically protective/suspicious of visitors
  • Might not like other dogs
  • May need additional training to live with other pets
  • May need additional supervision to live with children
  • Needs a large garden
  • Can happily live in the city
  • Can be left occasionally with training
This breed has a higher risk of health issues

Bullmastiffs are a brachycephalic breed; problems associated with the condition include;
Brachycephalic obstructive airway syndrome: a condition in brachycephalic breeds (those with a short nose and squashed face) where breathing is obstructed and can lead to reduced ability to exercise, or even severe respiratory distress.
Skin inflammation/infection: brachycephalic breeds have a short nose and a normal amount of facial tissue. This means there is often excess skin around their face which leads to skin folds. The skin inside these folds can become sore and infections are prone to develop. 
Eye ulcers: ulcers are painful erosions on the surface of the eye. They are more common in brachycephalic breeds due to their conformation, as their eyes tend to be more bulbous.

They can also suffer from:
- Hip dysplasia 
- Elbow dysplasia
- Cruciate problems 
- Gastric dilatation volvulus
- Panosteitis 
 - Dilated cardiomyopathy¹ which is a condition where the heart muscle becomes progressively weak and cannot beat properly.
- Wobblers syndrome² which is a problem in the spine that causes a wobbly abnormal gait.
- Entropion³ and/or ectropion which are painful conditions where the eyelids turn inwards or outwards, this happens as a result of excessive skin around the eyes.
- Cherry eye4, which is where a gland within the third eyelid pops up in the corner of the eye.
Priority Kennel Club health schemes and testing: 
- Hip dysplasia screening scheme

¹M. Borgarelli at el, 'Prognostic Indicators for Dogs with Dilated Cardiomyopathy', 2006, Journal of Internal Veterinary Medicine 
²P Sekhar et al, 'Wobbler's syndrome in labrador and rottweiler pups: an emerging concern in canines: a review', 2018, International Journal of Science, Environment ISSN 2278-3687 (O)
and Technology 
³J. E. McDonald, 'The use of hyaluronic acid subdermal filler for entropion in canines and felines: 40 cases', 2019, Veterinary Ophthalmology
4P. Tamilmahan, 'A retrospective study of ocular occurrence in domestic animals: 799 cases', 2013, Vet World


Despite their often violent past, the Mastiff is a calm, gentle and noble dog that is devoted and loving towards their family - often thinking of themselves as a lap dog! They are however indifferent or even suspicious of strangers - human or canine.

Did you know?

  • The Mastiff is one of the most ancient and valued breeds (for hunting, guarding and as war dogs) - and many countries in the world have their own versions.