Taking a Carnotaurus is actually pretty easy if you have the right items! (For Mobile edition!)
1. Get lots of meat or prime meat (prime meat is faster)
2. Get a Tranq Bow and Narcotics
3. Trap the Carnotaurus in a large bear trap (craft 2 just in case it escapes the trap)
4. Feed the carno the meat and feed it the narcotics when the unconscious bar gets low
5. And done! You have yourself a Carno!
PLEASE SUPPORT SO NOOBS CAN SEE!