My choice would be the http://t0.gstatic.com/images?q=tbn:ANd9GcT3HES6QbDRN31JYL_XdayrGXRHZUuAsQH18xakLcJusUf4oDAv. It's known for disemboweling people. It's extremely aggressive and I might just pee my pants if I saw one. It is a dinosaur, I'm telling you.