Nadd Series: Animal Add-on 1.17+

As you know, you can never have a lot of monsters, so we again offer you to increase the number of creatures in Minecraft with the mod Nadd Series: Animal. The build is quite simple: it adds a lot of animals, mostly friendly ones. They will spawn in forests and rivers. Biomes will become filled and realistic.

Duck
-Lays eggs like chickens.
-Produces seeds.
-Can clean itself.
-Fears the bear.


Buttercup and flower cow
-Faithful friends.
-Bees adore them


Piranha
-The jungle got a little more dangerous
-Eat absolutely everything and everyone.
-Skeletons are too skinny, so piranhas avoid them.


Bear
-Do not approach them unless they are children.
-Hunt foxes and wild boars.


The addition offers many other things that you will find in the game itself.