I have been gradually switching my eight week old puppy from Pedigree to Purina Puppy Chow. She seems to have been pooping less, and having a harder time with it. This may just be an overreaction, but what should I do? Also should I give it a few more days to see if she goes back to normal?

How did you introduce the new food?

It could very well be that you're mixing too much new food in before she's ready.

Here's a link that may help, and no, I'm not advicating the dog food on the link, I've never used it, but they do tell you how to introduce a new dog food to your dog.

Zamzows | Pet (http://zamzows.com/Default.aspx?tabid=1687&newsType=ArticleView&articleId=391)

Good luck.