You might want to take some anti-nausea medicine before trying to tame this thing because it just runs in circles (for me at least, and on mobile). A lvl50 took like an hour of running in circles. It was very painful.
But sorta worth it because it’s a mobile mortar&pestle and now I can lasso people.
Run run run, crouch when close still approaching at an angle, when close enough,(stack of carrots in zero slot) click three “e” three times; one to feed, one to mount, one to start THE RIDE! Each time you get the feed prompt, hit “e” and pray it gets stuck in a corner and doesn’t run off a cliff, or into carnivores. Ignore everything but the prompt, hitting “e” without hesitation. (You cannot control the run at all). That’s it.