If you have spent a really long time looking for one then it could possibly be because there are to many wild dinos in your world which means you need to go on a huge killing spree to open up some spots for the Tuso or any other Dino you can’t find to be able to spawn up so people will know
This noodle monster destroyed my lvl 46 itchy in under 5 seconds and didn’t even let me get its stuff back. After trying to kill it in my rage it decides to run when it’s health gets low. Now I kill any tuso I find for revenge.
When Ark says that the unicorn is the rarest creature. That’s a lie. At least the unicorn spawns. This thing is supposed to. I have spent the last week living in a pearl cave in their spawn hotspot and have not seen evidence of a single one. Reply to me @Tofuna