First of all, please don't buy anything living online. Electronics and makeup or whatever, fine. But if you're considering buying an animal (hell, even a plant) online, I advise you to forget the idea and go to your local breeder, or better yet, consider adoption! There are plenty of cute little pups waiting for a good owner at the shelter. Anyways, like the past reviewer commented, if you're looking to buy a pup online anyways, make sure you have a long, serious talk with the breeder. Ask (if necessary, multiple times) about the animal's conditions, disease history, anything, to make sure you know what you're paying for.