Dogs, like people, will show up in physical and behavioral characteristics if they are uncomfortable, mainly mental outlook, secretions from ears, mouth, nose and eyes, hair, excrement, walking posture, body temperature and foot pads.
Mental outlook: The mental outlook of a dog is an important sign of its health. A healthy dog should be active and show curiosity and fear of new things. And the quality of spirit is also the first signal to you.
Ears: The first thing you should do when choosing a puppy is to put it in a stable place, and then flick your fingers on its side or behind its head. If the puppy's reaction is to look at the sound source actively, it means that his hearing is normal and there is no obstacle.
Oral cavity: Oral cavity examination mainly focuses on secretions, teeth, gums and breathing.