This is a shape-shifting mythical creature which cunningly disguises itself as a simple farmyard rooster while indoors. But if it goes outside — whoosh! A flaming fire-lizard.
If one turns up unexpectedly inside your house, you are stuck with it. Sorry. Be nice to it. It may bring you good luck. But it probably won’t. AITVARAS tend to deal in the seedier side of fortune.
After yet another police raid investigating the miraculous appearance of stolen goods in your garage, you might find it less stressful to sell the house and move far far away. Just take care that you aren’t followed by a flaming dragon.