I've learned about the B vitamins and how helpful they are to anemic cats. I've learned what cerebellar hypoplasia is. My Creamsicle is a CH baby and I never knew what her illness was and, believe it or not, neither did my vet. (not my current vet) I've learned that I can administer subcutaneous fluids to a cat all by myself; that Calicos are always female. I've learned about ametryptilene and how it can help w/inappropriate urination. (It helps for a little while anyhow.) I've learned what LES and "poofing" are; that people I've known only on PT are generous w/their resources and their love and compassion. I've learned lots more but I'm hard pressed to think of them at the moment.