Overfeeding can cause loose stools. I took a quick look at the two foods and it looks like California Natural is higher in calories per cup than TOTW, so that should not be a problem unless she is eating a lot more than usual.
TOTW has many more ingredients than California Natural, so that could be the cause. There is a thread here about TOTW causing stinkier poops, even when the dog thrives on the food. Could be that TOTW is not the right food for your girl.
If she has been eating CN for a long time, I wouldn't be eager to start playing around with food. However, if you choose to, you could maybe look at another brand. Some people who wanted to change from CN went to Nature's Variety new limited ingredient lines. I believe Natural Balance also has a lamb and rice formula.
__________________ Kristin, Max and Teddy  |