I need some advice on what brand to feed my 5 month old yorkie, she is currently eating a tablespoon of ukaneba lamb and rice with a little of hills science diet in the morning and just the science diet in the evening, i have been reading a lot of thread about natural balance and wanted to know if that was better, sometime it seems like her stools are very soft. I also notice her knawing at her paws and she has been treated for fleas. thanks. Gracie