That's true. If you buy a pet dog, you must not buy it online, which is not conducive to safeguarding rights. Unscrupulous merchants can't help him if they don't handle it.
Physical stores are more secure, and if the dog has any problems, it is also good to protect rights.
After buying a dog, you must take it to the pet hospital for a physical examination, eliminate virus infection and see the health status of the dog.