Minnie Mouse sounds cute! IAMS should be fine! Our one year old Havanese eats IAMS too. We were looking at switching her to a different, possibly better brand when she became an adult as I know some of the reviews on IAMS aren't that great and asked our vet about it. Our vet told us there was no reason to switch her from Iams if she liked it and was not having any issues on it, that there was nothing wrong with Iams and most of the the dogs that she sees that eat it don't have any issues. Our vet told us if we do switch her she would not switch her to Blue Buffalo (which is funny because that was one of the brands we were considering, even though we had not mentioned it). She said she sees more dogs with gastro-intestinal issues that eat Blue Buffalo than most other dog food brands. She said it is a trendy brand that people think must be good because of the high price, but that she sees a lot of issues with dogs that have it as their diet, and that a lot of those issues resolve after she has had people switch the dogs to some other food. She said she would not take a dog that was doing absolutely fine on a current food and switch them over to Blue Buffalo. She said there is nothing wrong with foods like Iams or Science Diet if a dog is eating it, likes it, and appears healthy.