Are Mastiffs aggressive?

No, Mastiffs are not aggressive by nature, but they have protective instincts due to their history as guardians and working dogs. Proper socialization, training, and responsible pet parenting are essential to ensure that these instincts are channeled appropriately and the dog remains well-behaved.

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.