I was watching my Big Brother Play and This Rex attacked a Swarm of Dimorphodons.My Big Brother said if Those Dimorphodons are High Levels the Rex would Die.I didnt Believe him then I saw the Rex Just Flew out of Existance.Be careful when you Hit High Level Dimorphodons.They can be Annoying when you Attack them. (This is true.I dont know if you can tame them though)