Wow, this is so cool, and very topical too. Please also suggest that they don't purchase their pets on-line either. It's so easy to post a couple of cute puppy pictures and represent yourself as a breeder, but most are puppy brokers getting their animals from puppy mills. It's ok for a breeder to have a web site, but ethical breeders will not sell over the Internet and they will want to meet the buyer in order to ensure that the people can make the commitment a pet takes. Here's a link you might be interested in:
Stop Puppy Mills