You want to make certain you cat is healthy and happy.  Although the Internet cannot replace your local veterinarian, at least it can provide cat owners with some basic information concerning primary health issues which cats face.  The information below is gleaned from reliable sources, but is not intended to serve as a replacement for you local veterinarian!

Cat Health Information by Condition or Disease -- This is the
        place to start!
Cat Health Center -- from Animal Planet
Feline Health-Related Links -- from NetCat
Caring for Cats -- from Cat Fanciers' Association
Feline Diabetes -- be informed
Feline Flea Control -- questions and answers