Although nothing can take the place of taking your pet to a vet when there may be a problem, there are plenty of informative websites available.
One relatively new site, is Webvet, which is dedicated to giving pet owners all the news they can use. The site hosts the latest news and advice on topics ranging from pet weight loss to acupuncture for ferrets. WebVet does not diagnose, suggest treatment or editorialize but rather provides news, information and fact-based education to pet owners.