How to Game a Dilo on your first in-game day:
1. Spawn on a beach
2. Craft basics (Pickaxe, Hatchet, Spear)
3. Kill one or two dodos and get their meat
4. Find a Dilo with a decent level (30-40)
5. Let it run after you and dodge their spit. Then knock it out by simply walking backwards and punching it when it comes to close. After a few punches to the head, it will run away, so chase it and punch it until it's knocked out.
6. Feed it the dodo meat and you should have a decent first tame.