![Incredible Story of a Lifesaving Dog That Can Sniff Out Girl’s Disease [VIDEO]](http://townsquare.media/site/156/files/2013/12/KK_and_JJ.png?w=980&q=75)
Incredible Story of a Lifesaving Dog That Can Sniff Out Girl’s Disease [VIDEO]
Kaelyn "KK" Krawczyk has a sever form of mastocytosis, which is a rare disease that causes an abnormal accumulation of mast cells in one or more organ systems. When these cells are activated, they can cause a life-threatening allergic reaction to simple, everyday things.