For full Otter taming details, get the taming calculator app.
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.
I once had an otter that I named harry otter , he was a great otter he got me all the silica and black pearls I needed, he once saved me from a megalodon , he kept me warm to, he was a great companion I took him almost everywhere,but one day I was farming pearls with him I threw him at a fish to get pearls from it but instead he disappeared I looked and looked for him only to not find him but uneven got a message that he was dead, he's still out there somewhere, I still look for him to this day. #prayforharryotter
The otter will not gather pearls on aggressive you have to command it to attack 1 at a time. Also mine seems to be glitched after eating a fish it will follow a random tribe mate or try to run back to base idk if anybody else is having this problem but I'm getting tired of chasing it after every fish.
Otters can protect you from cold climates drastically, they eat up all your depression and aren't hard to tame at all! Just catch some Sabertooth Salmon or Piranha and bring the corpse to the otter and feed it. There you have your very own cute little otter. But remember to Bola it so it doesn't run away first. About 2 just in case. Kill one and I'll find you on multiplayer...