Boo, age 10, just got her first checkup in a while.

She presented two years ago weighing 16 pounds, with a 300+ heart rate,
which is what signaled us that she had hyperthyroid--unusual but not unheard
of for a fat cat. After we began treating her thyroid the vet expected her
to GAIN weight. Not a good prospect.

Today she weighed in at 12 lbs and had a heart rate of 120 bpm!!! I have to
wait until tomorrow to get the results of her bloodwork, but that heart rate
seems low, especially for a cat that freaks out at the vet. (She howls
piteously the whole time.)

So, I am thinking that maybe we have overcorrected her overactive thyroid?
Do you know if, just as an overactive thyroid causes a fast hr, an
underactive one causes a slower one? And if the numbers come to show this
when the bloodwork is in, does that mean that the vet might adjust her
Tapazole dose and she might then LOSE weight without my cutting her food
back?

So, how did I get her to lose 4 lbs in two years when we actually slowed
down her thyroid a year ago? Just what you told me to do. No free feeding,
no more dry food, just good-quality canned food about 12 hours apart. She
has been getting 6-8 oz per day-- 8 on the days she manages to outfox me and
steal her sister's food when I am not looking!

Thanks for your help, as always! :)