Tibetan Mastiffs are large and powerful dogs. Males typically weigh between 90 to 150 pounds, while females usually weigh around 70 to 120 pounds. They stand about 24 to 30 inches tall at the shoulder, with males being taller and heavier than females.

Tibetan Mastiffs are known for their strong, independent, and protective nature. They are loyal to their families and can be quite affectionate with those they trust. However, their guarding instincts may make them wary or cautious around strangers. Early socialization and consistent training are crucial to help them develop good manners and adjust to different situations.

The Tibetan Mastiff has a thick, double coat that is designed to protect them against harsh weather conditions. The outer coat is long, dense, and straight, while the undercoat is soft and fluffy. The coat comes in various colors, including black, brown, blue-gray, and gold, often with white markings. Regular grooming is essential to manage shedding and keep the coat healthy, especially during seasonal changes.

Tibetan Mastiffs thrive in environments where they have space to roam and protect their territory. They do best in homes with large yards and experienced owners who can provide firm leadership. While they can adapt to different living situations, they generally do not do well in small apartments. They require companionship and should not be left alone for extended periods, as they can become bored and destructive.

Tibetan Mastiffs require regular physical activity to maintain their health and happiness. They enjoy daily walks, playtime in a secure area, and can also participate in obedience training and socialization activities. It's important to provide them with mental stimulation through training exercises and interactive games, as their intelligence and independence can sometimes lead to stubborn behavior if not engaged properly.