My first dogs...

[BC_MoM]

Well depending on the dog, it could cause digestive upset, diarrhea and throwing up. It doesn't happen with all dogs, and some never have a problem with the fast switch but I think most recommend it because it's overall easier on their digestive tract and the way you find out it does bother them is after they are already sick, so people try to prevent that in the first place.

Some dogs have no problems like yours & mine (I do fed a variety of foods/treats people food to keep their sytems used to allowing new & different foods) but some dogs have a very sensative digestive tract and may develope problems with switching foods so abruptly.

Thanks for informing me on that.