Are Tibetan Mastiffs aggressive?

No, Tibetan Mastiffs are not aggressive, but their protective instincts can sometimes be mistaken for aggression.

If you are concerned by any signs of aggression or reactivity in your dog, be sure to address it promptly with the help of a professional trainer or behaviorist. Pain, discomfort, or underlying medical conditions can sometimes contribute to changes in a dog’s behavior, so it may also be worth visiting a vet to rule out their health as a cause for their behavior.