This Dino is found in the cave in between volcano in big mountain. It’s not that hard to find in mobile.

Do NOT TRY TAMING JUST BEFORE DARK! I've tried taming one of these and when it turned night, it lost its torpidity all at once, woke up, and murdered my mount.

For mobile players check the artifact of the clever cave

Whatever you do, do not get close to it with pretty much any medium dinos or fliers because these thing can pick up fricking argies and monch them to death so keep a good distance between them, you and your tames. Trust me on this i lost a lot of things to these monsters.

We need a coffe update for this thing

They look cute ,when they are sleeping.
Knock them out early morning (game time), they are very slow and won't wake up during taming process.In Ragnarok there is a mountain cave between lava biom and Viking bay. You can find them there .fly through sea area the cave will be easily spotted .

Pet it

Useful tip for everyone: Ark’s day and night cycle is 1 hour in real life (on normal settings).
That means if you shoot the dinosaur right out at 8:30 p.m., it will wake up in real time in one hour at 8:30 p.m. the next day. For each past hour you have to subtract 2 minutes and 30 seconds. Example: you knocked him out at 10:30 p.m. -> he will wake up in 60 minutes - 2,5 - 2,5 = 55 minutes
At level 26, it is the first time that the Megalosaurus needs more than an hour to be tamed.. So be prepared to knock him out twice or three times

These guys are a must-have in Aberration; they are always awake (at least in the bioluminescent area), and thus always have their night buff. Of course, this also means you must always be wary of wild ones while in their territory.

Only true savage will try to tame this with cooked fish meat.

Be careful! These guys can grab argents. I didn't expect him to be able to grab something that big. I thought it was small dinos only. I boxed him in at a cliff face with 2 behemoth gates and started shooting, but somehow he scaled the small cliff face and snatched my passive level 256 argie up into his mouth and didn't let go until she was dead.

The best way to tame is make a gate, aggro it on the gate, and when it’s out of stam it’ll knock on its own. Then it won’t wake when it hits night. Trust me, I did it. ^ if this helped.

How do they know if it’s day or night on the island if they spend all of their time sleeping in caves?

On mobile it only takes 3-6 tranq darts to knock it out

At night time with their boost it’s either on par or better than a Rex. These things are the dangerous little brother of the giga...

If you are playing on Ragnarok try to find Megalosaur in/nearby viking bay and in jungle nearby viking bay

The devs should add a command for singleplayers that the Megalosaurus can grab creatures on it‘s own without attacking them so the player can knock the dinosaur out easily in front of him (through a command like turret mode on the chalicotherium)

I was in a cave. I found a rock. I tried to get stone for kore arrows. It wasn't a rock. I died. It was one of these guys sleeping. I bearly made it back and got my still somehow alaive shinehorn.

It's easier to tame one during the day, since they will be sluggish. Find one in the Chitin Cave, and shoot it while it's sleeping.

I had trouble figuring out if aberration made it that megalos woke up during taming or not. To clarify the do not.