What is the performance of Labrador angry

Labrador angry what performance Labrador when angry its mouth mouth will emit a special sound, this sound is different from the usual bark, is the kind of whirring low roar sound, as if from the throat inside the general, this sound is actually also represents a threatening meaning. When Labrador is angry, sometimes he will fall to the ground and stare at his master with vicious eyes, or simply turn his head away from his master. When a Labrador is extremely angry, he will cross his front legs, arch his back, bend his body, and raise his fur in a ready-to-attack stance. His physique, especially his limbs will be hard on the ground, and his body will look more rigid, and even his tail will be directly erected, is the kind of hard feeling, then the appearance of such a performance means that he will soon attack.