That being said, Chi-Chi is fat. She is starting to look like a football with legs. Here she is looking very football-like.

She is 3.5 years old. She was a very thin chi for the first year that we had her. We went on a trip for 3 weeks and when we came home, I swear she looked enormous. My dad definitely overfed her. Well, here it is 1 year later and she is chunkier than ever.
We were just at the vet on January 30, 2007. She was having some pain when she moved backwards so I took her in. Of course, by the time I was able to get an appointment, she seemed to be in no pain. I was worried that her weight was causing the problem. The vet said she weighed 13.8 pounds. The vet's biggest concern was that I was feeding her and Pinky just once a day. She told me to break up their food into two meals, giving them less. I brought the ingredients of Chi-Chi's dog food and she said it wasn't the food that was making her fat. It doesn't matter if I bought diet food or not because if she is getting snacks during the day, that is going to be the culprit.
I know for a fact that both dogs are getting snacks and tidbits during the day. She advised that we cut out all snacks immediately. Feed her 1/4 cup of food twice per day and then they would re-weigh in May when she comes in for her annual check-up. She should show a loss by then. If not, they will do blood work on her to see if she has a thyroid problem.
I weighed her last night on my scale and she weighed 13.2 pounds. Because it is a different scale, I don't know if she really lost any weight at all, but at least I have a starting point for our home scale. I shall weigh her once a week to see how she is doing.