Sash just turned 12 and had his annual yesterday with blood work. I was kinda sorry I did though since the vet asked me. Sash is usually pretty good there, he was horrible this time, hissing and growling. They had to put a muzzle on my poor boy. I felt horrible and was so worried about the stress it caused him. I usually have his blood work done once a year, I'm seriously afraid to next time now. My mom never had blood work done each year. Do most of you do this once a year with older cats? I know they suggest twice a year.