The no agro trick only work if 1. It's tamed inside the cave and 2. You play mobile not PC or console this also works for arthros but the spider is faster and can turn on a dime which is perfect for the yeti cave.
The best way to get and tame one of these is get in a cave with at least a pistol and longneck rifle. Shoot the brothers, then a couple tranqs will KO it. Give it some spoiled meat and harvest the chitin. Then some hide and fiber will make saddle. Command gmsummon “araneo_character_bp_c” 1
The last number is for level. Also if it’s not too much to ask plz subscribe to my YT at Gamechamp141 and leave a comment saying you are from Dododex