When breeding them, feed them cooked meat until they are full grown. They have issues with starving, especially in the baby stage and often need to be forced fed. Cooked meat satiates less hunger, and they eat slightly more often, keeping them alive.
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.