The Tibetan Mastiff breed is a very large one and is rare. They can attain tremendous sizes and requires close supervision while still young. Lots of open spaces are required to raise this particular breed.

Recommended for: pet, working dog
The Tibetan Mastiff dog breed is a very large breed, one of the largest. Those still found in Tibet are fierce but those that were raised in England are actually quite gentle. They require training, which will be easy if attention can be held, while still young and this is a must. This is not a small dog that can forego lessons. This is 140 pounds of strong will, strong muscles, powerful jaws, and big size. They are not suited to live in apartments and neither is it a good idea to leave them outdoors at night. They are natural guard dogs and will bark at anything, likely disturbing neighbours. As guard dogs they are courageous and will tackle even predators. They are independent and intelligent and expect to be treated as companions rather than house pets. Towards strangers it is aloof. Tibetan Mastiffs are good with children because of their patience. Remember that breed only provides a general clue as to any individual dog's actual behaviour. Make sure to get to know dogs well before bringing them into your home.