Is there a good website that helps in researching health topics for pets?

Our dog has a blocked anal gland, and I want to read all I can about it.

I like this one because they have pictures which often show you more than you really wanted to see.

http://www.thepetcenter.com/wai/analsacs.html

I wouldn't limit it to just one site because different people have different opinions on just about every topic.

Here is also a general purpose link to veterinary schools around the country. They have more cutting edge information.

http://www.metpet.com/Resources/Health/veterinary_schools.htm

More links to veterinary organizations. Some have more articles and information than others.

http://www.metpet.com/Resources/Health/veterinary_organizations.htm