Watch out for alphas! They have a red cloud around them. If you see one, RUN! I saw one and thought, well, might as well kill it. Went it with 2 dilos, a carbonemys, 2 iguanadons, a dimorphadon, and a diplodocus. I died once. The only reason I went back for more was my diplodocus. The diplodocus was the only survivor. YOU CAN NOT KNOCK OUT AN ALPHA.