The aggro on these guys is buggy so I have found feeding it babies to be a waste if time and mats. Trap it. Ride tame in on neutral. Hop off right before it dies. If using flyers do not pre damage them. The troodon bite drains stamina which will keep it from flying away when you jump off. Tame troodon 1 at a time.

More Troodon Taming & KO Tips