Badges update automatically and link to the resource pack page on MineUniverse.

Tutorial:
Due to OptiFine having inconsistent updates and features, its recommended to use mods: EMF & ETF instead
If using OptiFine, make sure to enable these settings for complete features:
Video Settings -> Quality -> Custom Entity Models: ON
Random Entities -> ON
Emissive Textures -> ON
In order to prevent texture issues, this pack should be at the TOP of your Resource Pack list.
Features/Inconsistencies
Features:
- Adds new baby models and textures from 26.1
- Fixed z-fighting and pivot points in original snapshot models
Bugs/Inconsistencies:
- No support for Dolphin and Squid/Glowsquid as babies can't spawn in past versions
- No new Rabbit animations
- Inconsistent hitboxes (Rabbit hitboxes are much smaller than the model)