Bring lots of narcotics! On the center they are mostly in the redwoods. Sometimes they spawn in your base (if you live in redwoods) use a bola and have a couple because it takes awhile to get their torpor up(it drops quickly) use kibble so you don't have to use as many narcotics. If you want to use berries or crops, you should wait until double xp because it goes up slowly and uses more narcotics the longer the tame. Make sure to tame quite a lot, too. Their eggs are valuable. (Depends on the server how valuable)
If you have a Snow Owl and two people, make sure not to aggro it, and have one person freeze it and while it's frozen have the other person quickly build either high stone walls or two wood walls stacked on top of each other around it. You can use fence foundations to put the walls on top of and can put a wooden door frame on top of a wall on one of the sides so you have a place to jump and shoot at it from.