Big Nether Larva

It spawns in Nether and Deep Nether in a biome called Nether Mushroom Forest. It's rideable.

Drops
It drops Big Larva Hide upon death.

Behaviour and Spawning
It can spawn anywhere in the Nether, it also spawns in Deep Nether in biome called Nether Mushroom Forest. It's immune to fire and fall damage. It's rideable.