Hi all.  Seleena was on Royal Canin since she stated eating kibble (she's almost 10 months), and after doing some research, I decided to put her on a premium dog food.  After many, many different samples of different foods, I decided on Natural Balance Ultra Premium Formula (dry food).  I started to do the gradual switch, and she kept eating the Natural Balace and leaving the Royal Canin.  After a few days, I just stopped giving her the Royal Canin and gave her Natural Balance.
 
I noticed after a few days that she was having loose stools.  This was two weeks ago.  I started giving her a little yogurt (one teaspoon in the morning, one in the afternoon), and that has really helped firm up the stools.  When I've not given her yogurt, she gets loose stools again. 
Should she still have loose stools after two weeks?  Could the Ultra Premium food be too much (as in too much "good stuff" compared to Royal Canin) for her?  She's not dehydrated or having diarrhea, so I haven't taken her to the vet (plus, her vet practically shoves Royal Canin down your throat when you are there, so I know he wont be happy with the food change). 
Any advice is appreciated.  
