It's now 3 tranqs to cap a monster. Not sure if that changed from Tri, I do remember being confused whether or not I was missing because I always thought it was 2.
Anyway, I now always hit em with 2 before I even plant a trap. Too many times I've planted my one and only Shock Trap, get knocked down while planting/tranqing (from them charging, or by an add) after the monster already triggered the trap. Then the damn thing wears off just as I'm about to hit it with the 3rd tranq...
Nothing in this game makes me rage more