If you are on a pvp server(pve works as well), and you're raiding someone, try to use the rhino's charge attack. If your opponent has a rex, and you hit it with a full charge meter, it will be an instakill.
ABSOLUTELY RIDICULOUS TAME. TRIKES OF THE NORTH, THESE CAN INSTANTLY TEAR A NOOBS BASE IN PVP!!! THESE ALSO DO 9K DAMAGE AS TAMED AND 6K WILD. HAVE FUN DESTROYING PEOPLES CARNOSAURUS, REXES, SPINOS, ETC. HAVE FUN, MUST TAME.