Passive tame with ghilie suit and bug spray and light Dino on shoulder. Run under it and crawl and begin shearing it as if it were a sheep it will enjoy the belly rub and become tamed after specific number of trigger clicks remember do not hold down the trigger but trigger finger the shearing for best stats. Easy to tame I have 5 on 664 Xbox you can also raise them from egg for even better stats but need milk so same method belly rub take milk then dip.
They lose 1 point of food every 15 seconds, so to time how long until they start starving, multiply their current amount of food by 15 and then divide by 60 twice. This will give you the number of hours left untill the food stat reaches 0.
((15 x food)÷60)÷60
Obtaining this creature will require you to enter the tek trench where puprle liquid and the nests of these creatures lay past the bioluminescent chamber, there you must steal an egg and raise in a cold environment feeding it nameless venom you can get by killing nameless