When the master moves the dog's hair, the dog is miserable, he doesn't like to let him move his hair, and the dog immediately turns his teeth, but he completely ignores the dog's methods.
Look at the dog's eyes and mouth, it's been a long time since you've been angry. Master, if you keep going, you might bite you.
Seeing the dog does bite at the master's hand, but the dog immediately controls his own mind when he's going to bite to get his hand, and eventually just puts his hand in his mouth.
That was already the warning to the master, but the master either never gave up the position or was still moving the fur of the dog, and the dog didn't know what to do, but only more violent personal behaviour.
There are dogs who like to touch or play, but there are dogs who are particularly repulsive, and each dog has a different personality, and when you see the dog's teeth, you need to stop immediately.
But this dog is really bad for the master, and it has to learn hard. The scene was posted online, and the netizens also said, "If my dog did something to his teeth, he would break his teeth. Netizens, how can you learn from the dog in the house?