At lvl 72 with flak armor on, a lvl 5 Troodon knocked me out with one attack at night. Last thing I saw was those glowing eyes before passing out. My Guess is that they attack vital organs. Luckily my Doedicarus was up for a game of baseball and launched that little devil out into the stands.
it was the 2nd day on ark it was about to be night so i went out on my moschops got some berries looked backed i saw glowing eyes and before i knew it i was ambushed by 3 troodons i got knocked out and fell off the hill then woke up last thing i saw was my moschops getting murdered by them
Went to go grab a drop during the night on my dragon. I was wearing full Master Craft Flak Gear and two bites from these little sneaky bitches and I passed out. Luckily my dragon was on nuetral. Unluckily that it's fire breath roasted me too. Lesson learned:
Burn everything on fire before you get off your mount...