To tame a sabertooth in dead island, just build a taming raft out of stone, go to dead island, aggro it, and lead it into the taming pen. Use tranqs to knock it out. You can tame a whole army of those using a pen.
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.