When you start a passive tame, the tamed dino starts to be hungry; if you dont finish the tame on time, it can starves and die.
If you start a passive tame and dont finish it, hours later you try again, dino instant die
If you are going to tame these they eat berries (obviously cuz it’s a monkey)
but you need to crouch and every time you feed it you need to quickly turn around and walk away for a bit or the monkey will get scared and run away. Hope this helps