I had Freya on Blue Buffalo Puppy formula and just recently switched her over to Taste of the Wild Pacific formula. It's an all life stages formula and I'm concerned that it is too rich for her system? She's vomited it up a couple of times...and she's been on it for a few weeks now. She doesn't eat as fast as she used to with her puppy food so I don't think she's getting sick because of that.
Her energy level hasn't changed, she is a bit mopey though. She poops normally and everything else is spot on.