Health Bar addon works with all mobs Add-on 1.21+

Mod Health Bar addon works with all mobs displays the number of hearts for all mobs and monsters in Minecraft. The pack is compatible with any creatures, including those added by other add-ons. The health indicator allows you to plan attacks and survival more accurately, makes hunting for rare mobs easier, and helps both beginners and experienced players navigate battles.

The health bars will change color depending on how much health a mob has, and will also animate when taking damage or being healed.