Fauna Amplification Mod
Fauna Amplification Mod 1.12.2 adds more animals with aggressive behavior to give Minecraft a more wild feel to them. No unnecessary items are added. The natural spawn of farm animals (Cow, Pig, Sheep, Chicken) where removed to make the survival experience more survival like. At the moment only 3 animals spawn naturally in the world (Buffalo, Crocodile, Piranha), one can only be spawned with spawn eggs at the moment (Cannibal).
Screenshots:
Cannibal: He wants to eat you. Can only be spawned with spawn eggs.
Buffalo: The buffalo replaces cows, it can do whatever a cow can but beware if it is attacked it will attack back and if a calf is attack every buffalo around will attack. They can usually be found in plains and savannas in packs.
Crocodile: The crocodile will attack anything around, it is very slow on land but beware in water it can be lethal. Usually it is found mostly in swamps in large numbers but can also be encountered in rivers in fewer number.
Piranha: The piranha is not much of a threat but the danger comes when they attack in groups. It usually lurks shallow waters.
Requires:
How to install:
How To Download & Install Mods with Minecraft Forge
How To Download & Install Fabric Mods