Piranhasaurus Rex

So I had this idea rattling around my little brain for over a year or so. I got the inspiration from playing with a friends bulldog.
This dog liked to attack your feet and attempt to eat your toes, but if there was anything in your hands, it would fly up and latch onto your now bleeding digits with a formidable death grip.
So id find myself looking down at this ugly beast, with a case of severe snaggle teeth and a exaggerated under bite, standing on its hind legs growling like some constipated beast. Then it snapped into my head...you are a cross between a Piranha and at Tyrannosaurus. BAM!!!! The idea of Piranhasaurus Rex was born.

This image was done in my sketchbook and it is a first draft of the P-Rex design.