Reliable information about canine health

I've just read about a site where I can get good information about issues that come up in regard to Penny's health. It's The Merck Veterinary Manual . For years I've used The Merck Manual to look up human medical information and found it good, so I'll assume the animal one will also be reliable. I found the reference on Noahs' Bark, though it was in one of the comments rather than in Noah's own post.