(Ark Survival Ascended) If you sprint and jump to the left as a Rex is about to bite you, it will miss. Continue walking left, circling the Rex's right leg and the Rex will be unable to hit you. Make sure to stay a small distance away from the Rex's leg or you will take stomp damage. This can be used to tranq a Rex and tame it without a trap or flying mount. (Tested with 115% speed)