Mastiffs 101

Working group

Make no mistake: The Mastiff is a very large dog; large enough to pull an adult human being off their feet or knock over children without meaning to. Fortunately, they are generally laid-back and relaxed around their people, as happy for a snuggle on the couch or bed as any other dog alive. If you have a Mastiff, be prepared for lots of comments about the size of your dog. In fact, be prepared for oversized everything!

What we love about Mastiffs

Family dog who needs lots of room on the couch

Energy level
Bark level
  • As needed
Size
27 to 30 inches tall
Lifespan
6 to 10 years
Weight
120 to 230 lbs

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Mature adult Mastiff

4 years to 5 years

Risk level for common Mastiff conditions

Cruciate ligament tear (knee)

Ear infection

Hip dysplasia

Senior Mastiff

6+ years

Risk level for common Mastiff conditions

Bone cancer

Arthritis

Cruciate ligament tear (knee)

Mastiff puppy

0 to 15 months

Risk level for common Mastiff conditions

Gastric dilatation and volvulus (GDV)

Hip dysplasia

Foreign body ingestion

Young adult Mastiff

16 months to 3 years

Risk level for common Mastiff conditions

Gastric dilatation and volvulus (GDV)

Entropion

Cruciate ligament tear (knee)

Mature adult Mastiff

4 years to 5 years

Risk level for common Mastiff conditions

Cruciate ligament tear (knee)

Ear infection

Hip dysplasia

Senior Mastiff

6+ years

Risk level for common Mastiff conditions

Bone cancer

Arthritis

Cruciate ligament tear (knee)

Mastiff puppy

0 to 15 months

Risk level for common Mastiff conditions

Gastric dilatation and volvulus (GDV)

Hip dysplasia

Foreign body ingestion

Young adult Mastiff

16 months to 3 years

Risk level for common Mastiff conditions

Gastric dilatation and volvulus (GDV)

Entropion

Cruciate ligament tear (knee)

Mastiff image

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Mastiff introduction

The Mastiff was mentioned by Chaucer in his "Canterbury Tales," written in the 14th century.

Mastiff coat care and colors

Dealing with drool is the biggest grooming issue these dogs have, so you'll want to have towels handy wherever you go. Aside from that, the Mastiff's coat is relatively easy to care for, needing little more than brushing a couple of times a week and a bit more during shedding seasons.

Mastiff exercise & training

Loves walks

Exercise level

Mastiffs neither need nor want much in the way of exercise. They are happy to relax while keeping an eye on things, but will rise to the occasion should they perceive a threat to their family. They do need exercise even if they don’t really think they do; regular walks will fit the bill.

Independent study

Trainability

As with many breeds developed to make decisions on their own, Mastiffs may not be especially interested in your guidance. They are, however, devoted dogs and will be willing to listen if you make it worth their while with praise and treats. Because of their immense size, early socialization and training is a must.

Mastiff fun facts

Top girl names for Mastiffs

100%

of Mastiffs are female

0%

of Mastiffs are male

Top boy names for Mastiffs

Nationwide loves Mastiffs of every name, from Aaron to Zog the Destroyer

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