Butt-biting viper
The Butt-biting viper of Tasmania is the most lethal man-killing predator on the face of the Earth. The nomenclature is deceptive because the snakes attack not only the butt but the pancreas, ankles and clavicles of humans and orangutans. Today large populations are found in Switzerland, Turkey, Nigeria, New England and Nova Scotia.
The Butt-biter is the first genetically engineered snake to be built from the ground up from donated foreskins and tonsils. First conceived by Boston mob boss James "Whitey" Bulger as a means to effectively combat incursions by Italian crime bosses into Whitey's home turf, South Boston. The Irish mob purchased an orphanage, replacing the staff of nuns with catamite fur trappers, and built a class 4 clean room with 7 labs.