It is terrible to be a dog lover who is allergic to dogs. However, even if you aren't a dog lover, but have a dog allergy and live in the US(where there are about four pets for every 10 people), life is still not easy. The stuff you are allergic to (dander) is almost everywhere, including places where a canine has never been. In fact, according to the National Institutes of Health, there are detectable levels of pet dander are in every home in the U.S!