Would they be too high for a large breed puppy? A lady in my training class and I were chatting casually and we got onto the topic of foods. She really enthusiastically suggested I try Katalin on Orijen 6 Fish/Adult formula - I said she's been on Acana previously and had alot of loose stool; she's currently on Firstmate large breed and doing extremely well on that so I saw no reason to change it. I've heard it's advisable to switch foods around every once in a while though - from this lady and others. But I've also heard from my vet that high protein levels (30% +) can lead to a variety of issues (we didn't go into in depth discussion about it that visit so I can't speak for his reasoning/basis of that) - also, my breeder advised me that puppy food/food with a high caloric and/or protien level should be discontinued by 4 months. Lots of extra large breed breeders also advise against using puppy food past 4 - 6 months. "How may I act when all present me with their partial arguments?" - Helen Mirren as Elizabeth I. Please offer opinions/shed some light on this. Are those foods and their protien levels ok for a giant breed puppy (11 mos)? and is it necessary/wise to "switch around" foods every now and again?