DnD/Bloodied
< DnD
Bloodied
"Players often ask how hurt a monster looks. Don’t ever feel as though you need to reveal exact hit points, but if a monster is below half its hit point maximum, it’s fair to say that it has visible wounds and appears beaten down. You can describe a monster taken to half its hit points as bloodied, giving the players a sense of progress in a fight against a tough opponent, and helping them judge when to use their most powerful spells and abilities."
Running the Game - Dungeon Master's Guide - Sources - D&D Beyond - https://www.dndbeyond.com/sources/dmg/running-the-game#TrackingMonsterHitPoints