The dossier says:
"Found only in the dark caves of the island"

They are already wrong! It should say something more like:
"Found everywhere but the dark caves of the island, this creature will gladly ruin your day by jumping out and killing you as soon as you even think about going to the swamp. Nearly impossible to tame because it has to be tamed via passive which is very difficult to do. Worst of all you need to feed them fertilized eggs. Why can't it e a little easier?

You take a normal snake. Give it tons of drugs, and you have a Titanoboa.

Maloi the Baryonyx.

If you're in an area that has a lot of these, put stimberries in your hotbar so if you get bit, spam those so you don't knock out, if you knockout, you're dead.

If you encounter a Titanoboa either shoot it with a gun if it’s for wearing off a crossbow or just run like heck

These things are SOOOOOOO easy to kill that if you ain’t planing on lvling their speed they’re pointless to tame. If ur looking for some good kills on these glorified anacondas, just get a metal axe (or a sword if ur picky) and walk backward. Swing yah axe (or sword) while ur moving, and don’t stop. I killed 30 at lvl 5 with this strat. You’ve gotta lvl they’re speed ALOT if you wanna kill another player with one

A hiss is all you'll hear
As an indicator I'm here
One bite from my snout
Then it's lights out
And your tamed friends might disappear.

Be sure to bring stim berries! And a gun. And a machete. And a flamethrower. Would you believe me if I said I actually like snakes? ~CL1

You can’t tame these in ARK Mobile. It literally says that under the info tab.

Use ranged weapons against titanoboas and watch your surroundings as the can team up and knock you out.

I lost my Eqqus to one of them since then no snake lives

Kill IT before you geht seeping.These Things are real topor Machines If you geht bitten one time you Will Go sleep so Spam stimberries or kill IT the fastest you can.