hey Laura! welcome to PT I'm sure you'll love it here. I'm Erica, my boyy is a Border Collie named Gonzo. Shih-Tzu's are soo adorable! I can't wait to see pics of your pup

I'm so sorry for your loss ... Candy looked like a very sweet girl. I've met a lot of people who have lost dogs due to Proheart6, and I think a few PT-ers have had problems with it.