Red Eyed Raptor

Back in the early days of Jurassic Park, scientists had only been able to recover forty percent of the Velociraptor genome. They decided to fill in the remaining sixty percent with treefrog DNA, specifically the Red Eyed Treefrog. The experiment was a disaster. The hybrid looked absolutely nothing like the fossil remains of the velociraptor. Additionally, the creature was extremely hostile to the handlers. It would habitually hide itself by hanging on the ceiling of the enclosure, waiting to jump out at unsuspecting personnel with its extremely powerful hind legs and vicious claws. After the creature escaped, Jurassic Park made a policy to never again create a hybrid with less than sixty percent dinosaur DNA.