Worms!

This is a simple mod that adds worms to your game. The worms can spawn in forests and are very common! You can breed worms to make more worms, and you can even tame a worm for a nice little cosmetic pet. However, there is one monster lurking in the forest... The giant earthworm! Lucky for you, they are neutral and do not attack unless provoked. You can tame, ride, and breed these giants as well.

Creatures:

Worm, A small animal that is very common

Brown Earthworm, Just like the worm

Giant earthworm, A creature you can tame, ride, and have it fight for you if a monster attacks you.

This mod offers the ability to have more pets, so this would be a good mod for you if (You like worms) and want more pets in minecraft!