My Prissy Was Not Feeling Like Herself

Yesterday was a very hard day for me because my "Prissy" was not feeling well....and it started from the moment that she came out of her kennel in the morning. We always have the same routine, she goes into her kennel at night and goes to sleep, in the morning around 5 am, she comes out and so does Shorty. I feed, make sure that the water bowl is filled, put down clean pee pads and she comes out of the kennel like a horse coming out of the race gate, licking, running wildly crazy and jumping at my side until I pick her up....but not yesterday. She came out slowly, quietly and I just went on with the normal routine, came back home from taking my daughter to school and she was still the same way. The whole day she laid under the blankies in the room that I was cleaning and by afternoon time, she was still the same, so I tried to feed her but she wouldn't eat. I was very upset by this time. I picked her up, put some water to her mouth and she finally got some. I decided to go outside and the minute she heard me say to the other dogs "let's go outside", she came running. I picked her up and put her on my lap, and she enjoyed the breeze. By the time I went inside with her, I decided to open a can of chicken and she ate, finally.....I just don't know what was wrong with her...now, it tends to look like she was just being a stinker so she could have some chicken in a can, but honestly, she laid around all day. Whatever her problem was, she did finally get over it. I can't tell you how worried I was, and if she had not gotten over it, I would have taken her to the vet the next morning. Do you ever have this happen to you with your chihuahua?