Tranq arrows with a crossbow have a big chance of killing them. I would recommended using tranq darts instead. They also take so long to tame with regular meat. Use bronto kibble on mobile. I have a low level saber named fur ball.
Easily knocked out when you use a bloa. When stuck shoot in head while you can and itll go down quickly. Tranq darts make the process quicker, but arrows will do the job just fine. They can be picked up and dropped into safe taming cages by argies to make this easy tame all the more easy.