FACT: Chickens could hold the key to eliminating cat allergiesBy Kelley Heyer (creator of the Apple Dance!) Most people who are allergic to cats aren’t reacting to the fur—they’re reacting to a protein in cat saliva called Fel d 1. And now, researchers might have found a way to reduce that allergen at the source with the help of a surprising ally: chickens. It turns out that when chickens are exposed to cats, they produce antibodies against Fel d 1 and pass them into their eggs. But the idea that food could make cats safer for allergic animal lovers is a big shift from the usual focus on treating humans themselves.