This guy was actually quite easy for me to find since I live right near a swamp! He took about 7-8 tranq arrows to get knocked out and maybe 15 narcotic to keep asleep! Bring lots of narcotics with you because they wake up fast
Just a few tips: 1: Make sure to when taming bring lots of narcotics. They have high torpor but drain super fast. 2: If you can definitely use some sort of flyer or cryopod that can carry this because it is super slow. 3: Works as an air conditioner and gets better temperatures by upgrading melee.