My 4 year old toy poodle mix is reacting to her food. She is currently on a grain free diet, but she still has really flaky, itchy skin and by observing her bowl movements it's starting to resemble colitis (my other dog had the same issues hence how I know). It's got chicken in it and I have tried beef too. Can anyone recommend any foods. Also, she's missing teeth and her remaining teeth are damaged so any soft foods would be appreciated however if not I'll just add water to kibble.