Funny. Not quite as easy as finding a rare dog breed. ;) ;)
So here's a potholder. I know, I know.
But.....
http://www.embudofabricdesign.com/po...lamonster.html
why couldn't you applique (sew/fuse/whatever method) this pattern to make your own gila monster? This particular image is pretty graphic, and if you make the background black, you could fuse the other fabrics to give it a scaly-like effect.
Just a thought.