How to judge whether a dog is good or not?

Whether a dog is good or not should be judged comprehensively by health, temperament, and appearance. First, observe the dog’s energy and eating; if it is sleepy, eats little, reacts slowly, or shows tear stains, bad breath, shedding, diarrhea, fever, or a runny nose, its health is poor. Second, observe temperament – a good dog is generally calm and will not bark or destroy things for no reason.

When meeting other dogs outside, a good dog will not act aggressively, and it will not get overly excited around strangers. Finally, purebred dogs usually have better appearance; compare photos of the same breed online, and a good-looking dog generally costs more.