Congrats on the rescue of your pup. It sounds like a beautiful mix. And probably a handful! The best way to figure out an allergy is through an elimination diet with an Rx hypoallergenic food.
Just a word of warning, there has been a FDA warning on dog food that contain a significant amount of legumes and/or potatoes. There have been many cases of dogs eating these types of diets that have been diagnosed with Dilated Cardiomyapathy due to low taurine. It is suspected that these ingredients may be blocking the absorption or inhibiting the synthesis of taurine.
There is a data table on a FB page that is gathering taurine test results. Acana and Zignature are both consistently showing very low results. I wouldn’t feed either! Kangaroo is very low in taurine. I’m glad it is not available.
