I recommend a level 252 or over T-Rex, as the power of these things is not a joke. One of them knocked out my level 220 giga in one hit. Don’t joke around when taming one of these - you need at least 300 narcos and 500 pieces of raw prime meat. Be prepared.
Encountering this creature will mean your imminent death. If you want to take this you need a tek trap, as they can break metal. It can outrun almost all creatures. It will take approx. 350 shocking tranq darts for a level one and 1240 for a 180.