I made a little girl cry yesterday. She’ll be starting kindergarten this fall, and yesterday she learned one of the hardest lessons life has to teach. Her family’s cat, Rolly, was 17 years old and weighed four pounds. When a cat reaches that age and that weight, there are only so many possibilities. I’ve seen it enough times that I usually have a pretty good idea what the blood work is going to show before I ever draw the sample. But I run it…