Mod idea-Hellhounds

So i have a good mod idea called Hellhounds the mod adds a new mob to your game called the hellhound it has the same shape as the wolf but has a charred color to it and pulsing lava veins it is only found in the nether and does twice as much damage as the wolf and has twice as much health as the wolf it. The Hellhound can be tamed with Blaze rods and it can be healed by rotten flesh. The Hellhound basically acts like a wolf but it can swim in lava.
They can also set other mobs on fire.

Thought it would be a good mod idea thanx and bai.