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.
If playing an Ark boosted server, these guys are one of the best, if not THE best, to take on other boosted Dino’s like Rex’s, Spinos, etc. Even gigas!
I tamed a wild level 300 (max on my server) and i got it to around 130k health and it did a little over 150k damage with full or almost full meter. Pretty much one shot most Dino’s if they didn’t have lots of health points. These are great attack and defense!