Pretty straightforward tame. Eats meat, so mutton's a great choice. Definitely want a trap with a ceiling. Only fits through behemoth gateways, or so is my experience. Mammal, so it has a gestation breeding timer and produces living offspring. Incredibly fast base speed, suggested to level Stamina for ultimate rocket power. Suggested stone trap.
I watched a video on this, thought I share. Watch nooblets for moré info. U can trap it with 2 small Dino gates. U place one, lead it into the doorway (so his head is stuck) then u can freeze it with an owl, get lose and place a second doorway a little bit past his head near his shoulders. Boom he can no longer move. (Hope this helps, if not watch his video😊 )
Just recommended bring one large bear trap and two stone dino gates. First, kill EVERYTHING around you and the Mana then give it attention and let it follow you. Before that place one dino gate and large bear trap in da middle and then lead it to it and then when its trapped place another gate then ko it.
You can trap them temporarily by leading them with a snow owl under a hatch frame or into with a piller and ceiling connecting to the hatch frame. Trap them let them tire themselves out by trying to escape and also shoot a few darts ever now and then possible that near the last 10 darts if its a high lvl you should just place a few bear traps so it doesn't run away from you with high torpor. Once its knocked out take out a enforcer go in the edges of the map where you find silicate rocks and look for corrupted gigas and rexes kill a rex or 2 with the enforcer and it will get you enough prime meat to instantly tame the managarm if you let it lose like half its food in the trap. The trap is 2 stone pillers with a ceiling on top and a giant stone hatch frame connected to the ceiling close the trap door when the managarm is in it and if it escapes no worries just keep leading it under the trap and it will get stuck for some time depending on the terrain sometimes for 10s it will be stuck while others times it will be stuck permanently.