You shouldn’t feed the same food for years, not even months. Can you not imagine what your guts would do if you started eating only one thing for an extended period of time and then all of a sudden started eating something else? Dogs are the same way, we create dogs that get upset stomachs because we believed the dog food ads that told us to feed it for life. I had one of those dogs. My JRT would get violently sick if I gave her anything that wasn’t her regular food and it took a month to switch foods for her. When I heard about the idea of diet rotation I thought that she could not handle it, but I read more about how healthy it is for dogs so I decided to give it a try. The first switch took a month, the second did too. But the third switch only took 2 weeks, and the fourth only 1. At that point I started adding a little of something different every day. Now she gets a completely different meal every single day. It is something they have to get used to, but now nothing upsets her stomach.
