Bailey N,
The Chicken strips contain vinegar, which can cause an allergic reaction (vomiting) in susceptible animals. Additionally, vinegar increases the output of Hydrochloric acid (digestive or stomach acid), which can cause a “sour stomach” and reflux resulting in vomiting. Vinegar should also not be given to animals that have certain medical conditions since it can aggravate their symptoms. Some of these conditions are: pH imbalances (alkaline or acidic), kidney, liver, or adrenal issues. There’s an article in Whole Dog Journal discussing the use of vinegar in dogs (pros and cons) at this web site: http://www.whole-dog-journal.com/issues/2_6/features/5220-1.html
