Fetch Finder

Breed guide

Mastiff

One of the heaviest breeds: a calm, dignified guardian. Gentle with family, very protective.

A Mastiff
Photo: Radovan Rohovsky · CC BY-SA 3.0, via Wikimedia Commons
SizeLarge
Weight120–230 lb
Lifespan6–10 years
Yearly cost$2,500–$4,500*
👪 Good family dog Usually good with kids, with training and supervision.

At a glance

Energy level
Shedding
Grooming needs
Apartment-friendly
Handles cold
Affectionate / cuddly
Good with kids
Good for first-time owners
Easy to train
Good with other dogs
Good with cats
OK being left alone
Reliable off-leash
Protective / watchdog
Barking
Drooling

Great for

  • Calm households
  • Families with space
  • People who want a gentle guardian

Watch out for

  • Drools a lot
  • Very short lifespan
  • Giant-dog costs

Daily care

Exercise: 30–60 minutes a day.

Grooming: Weekly brushing.

Cold weather: Handles moderate cold.

*Yearly cost covers food, routine vet care, preventatives, toys and supplies. It doesn't include the purchase or adoption fee, emergencies or grooming beyond basics.

Gear for a Mastiff

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