I just looked up what hyperthyrodism is, because I wasn't really sure what it was, I was surprised because our Fluffy (age 16-ish) has almost all the symptoms! We just thought he was getting demanding and vocal in his old age, so I'm glad I read this thread. I am now going to make an appointment for Fluffy, and cross my fingers.

Here is the site that I went to, BTW this is a very good site to look up medical information for both cats & dogs:

http://www.vetinfo.com/cencyclopedia/cehyperthy.html