Inhaled allergens such as pet dander can trigger asthma attacks. The child was allergic to dogs and cats.I may be missing it....but I have not seen anything that specifically says the dog was an asthma trigger, which is different from an allergic reaction. Is this info available somewhere, that the dog specifically was an asthma trigger?
https://www.webmd.com/asthma/guide/allergies-asthma#1