Pump only DMG into them Black anvil yourself with poop put dung Beatles in a room on neutral unclaim it have kill you and harvest all the poop make sure its on wander and then you can leave it alone to do its thing
My buddy and I tamed a high level Spino and started walking it home as we were new and had no saddle. We lose sight of it for a few seconds and BLAME."killed by trodon". One millisecond later "trading killed by trodon". We didn't know thats how it worked and were thoroughly confused.