My first tame was a dilo, I got a pack of 8 of them and then I thought "wow this army is so strong, it kills all raptors and enemies at the beach"... So I approached the Therizinosaurus and basically said "alright get him boys" and uh, let's just say after I had no more dilos AND I died afterwards. From that moment, I noticed that thing is no joke in the early game.
I wanted to get my first artifact ever, So I went searching for a thyla (I’m on the island), I couldn’t find s***. So I went looking for a baryonyx, I found a level 115 and tamed that guy right up. I got some meat for him, and cryppoded him. I decided to go to the southern cave, so I did and I was confident as hell going in there. So I went in there, I thought that there would be way less creepy crawlers in the my bary was half health, then it was 1/4 health, then it had 200 hp, then it died. I ran into the artifact room. I tried to exit but an arthropela came up and I had 15 hp. I set up some sleeping bags In the artifact room, and ran out of the cave, and someway somehow, I made it out with the artifact, but no baryonyx.
Lesson learned: bring med brews, level up your caving Dino before going caving, and tame a thyla.