Easiest and safest way to tame this is to lure it under water. They stop aggro and you can tame as you please. Just make sure you come up for air every once in a while. Also be sure the water is deep enough.
Full Ghillisuit, bug repellent, and balls of steel because these are scary to tame! They have the taming slot right behind their head about where the saddle would normally sit. Must approach from behind and only approach when feeding, stay away otherwise
Make sure you don't wear armor around them
Because they will destroy it. Use bug repellent so they don't automatically attack you. If you need spoiled meat make sure you have each raw meat split up individually that way once 5 mins passes by it all spoils at once