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.
This guy is like Dire bear and triceratops combined. Its speed accelerate just like the direbear and the ram like triceratops but more powerful. The faster you run, the stronger the ram attack. I love dire bears and I like triceratops so I love this creature so much.