ARK's base taming speed on PC, PS4, and Xbox is now doubled, meaning 1× is as fast as what 2× was previously. Dododex has been updated to reflect this. Use the "presets" dropdown for common multipliers.
For full Otter taming details, get the taming calculator app.
Taming Calculator (Passive)
To tame an otter, kill some fish, approach the otter, and then use the action button to feed the fish to it. Level of fish does not impact taming. The Sabertooth Salmon is by far the most effective fish, followed by the Piranha and the Coelacanth. Please ignore timing and effectiveness as calculations are not yet complete.
Once I went out to tame Raptors, or... try to shoot one from the safety of my raft... but then I saw a lil otter, my heart melted!!! Then I realized, the OTHER things that were in the area included: A baryonyx, a pack of 7 Raptors, A theri, and sum other aggressive friggin things, and the otter STILL LIVES THERE. Soooo many trikes and parasaurs died to the pack of FREAKING 10 RAPTORS! But the otter. Just lives. How.
These little guys are so much easier to tame in mobile, but harder to find. You still need to kill a megipirahna, but you don’t need to grab its corpse to feed the otter. After harvesting its meat you can easily walk up to it and feed it until it’s tamed. It doesn’t run away in mobile, and I’m sure you can use any fish meat.