My baby dragon is breating fire on my pet unicorn.?

Well basically i just got this baby dragon. He's really sweet and his name is Frank. (we call him Frankie!) My adult unicorn, Bob, and his girlfriend Rainbow, both have lived with me for 10 years after i found them on the street in Neverland. So now that I have Frankie, he's been breathing fire on Bob. Don't worry, Bob is not flammable. Should I get this behavior checked out? I've already contacted Doria Waterwell from "It's Me Or The Dragon", and Beezer McFlan frrom "Unicorn Whisperer". Please Respond!!