Forge? Here.
PatPatPat allows players to pat(Shift + Left Click) a tamed cat or wolf.
When patting:
- The entity that gets patted will nod, shake its tail, and sound with pleasure and ease, perhaps even slightly healed.
- The player may get experience.

ATTENTION:
After 1.20.X-1.1.0, the mod has its compatible Spigot plugin.
You DEFINITELY CAN add the mod to your modpack.