The dinosaur when knocked out will wake up at night but just knock it out again and it will keep its hunger do starve taming for best results
Ps they supposedly only spawn in central cave on the island i found one in single player in the east cave which it cant fit out from so after i tamed it (i reccomend raw mutton its the fastest with max efficiency) i joined another player and had them sit on it since when o run out of the cave it telepirts them to me. Same trick works when a dinos stuck go split screen then the host runs over 255 meters the limit on space you be from host and the player and dino will teleport to the host.
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 .
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