I've gradually switched my oldie onto Nature Diet and noticed the rice content comes out exactly as it went in! I don't remember seeing this with other dogs in the past, has anyone else noticed this?

Hi,
I feed both mine on Naturediet and I haven't noticed this. But one of mine is senstitve to a couple of varieties for some reason and gets an upset stomach. He's fine with the rest of them.

Nature diet is all my boy can eat else he gets an upset tummy. And the other 3 get it mixed in with jwb never had a problem with it. But I've heard others say the same about the rice.