Add to the list of seeing-eye, drug-sniffing and therapy dogs a new type of service pup: Allergen-sniffing dog. As more people develop life-threatening allergies to things like peanuts, these specially trained pooches are in demand for sniffing out places and products that could trigger reactions.
http://www.foxnews.com/health/2011/06/09/special-dogs-track-allergens-to-keep-kids-safe/
