Its honestly much easier to tame an areano than a troodon because they both serve the same purpose. Areanos are much less expensive than a troodon. You'll thank me later. Just make sure to tame multiple areanos.
I recently played the play as dino mod as a Troodon, and I had a huge pack of Troodons. We were wreaking havock all over the south of the island, even killing a Theri at one point. However, do not tame them in the real game. It is not worth it. Sacrificing your tames just for a scouting dino isn't worth much. Maybe in a PVP setting, but I am a PVE player, making them worthless to me.