Cartoon Dweller Add-on 1.20+

Quite a simple and unusual mod, Cartoon Dweller introduces a rather strange character into Minecraft. A huge, black cat will relentlessly chase you and try to marry you. It already sounds very silly, but in the game, this miracle creature will take various forms and constantly pester you, trying to get at least a drop of your attention. Use this add-on at your own risk, as you might end up hating cats forever after this.

Do not anger the animal in any way, or else you will inevitably face the death screen, even in creative mode.