Easy tame trick, First get a bear trap (recommend 3 of them for good measure) next get fish meat or prime fish meat or kibble, then condition the area around the sarco, clear distractions like herbs etc. Then place the bear traps and lure the sarco to your location and after getting stuck shoot it with the weapon of choice and then feed it and POOF u got a sarcho, now get a deinosuchus. 😈