Just walk backwards while punching it or swinging a club, but time them correctly. Or keep a distance and use a slingshot. Make sure you prepare to dodge its spits. It doesn’t eat much food either. You can use these guys as early game bodyguards, poison turrets (if you encumber them in place by placing loads of stones in their inventory) and fodders for a raptor ambush or an artifact cave. They eat meat after tamed.
1.kill some dilos, dodos or compy so that you can collect meat.
2.Craft a slingshot, wooden club or you can beat it with fist (If your trying to knock it with fists choose a low level one; if with slingshot collect a amount of stones first also remember wooden club breaks fast so craft and keep atleast 3 more wooden club for backup)
3.Find a dilo
4.after it's unconscious open its inventory by going near to it and tap and hold. After you need to put some meat which we collected at first
5. Wait.....if your dilo eats all the meat but still not tamed put some more meat to its inventory and wait......