There are only 4 types of zombies, regular zombies, zombie villagers, zombie pigmen and zombie horses. I think it would be a good idea for other mobs to be “zombified.” Baby zombies could be riding on zombie chickens, or zombie wolves chasing you making the wolves untamable unless cured, and that takes me on to another point. Different mobs would be cured in different ways, Wolves, a bone and golden apple. A zombified cow, wheat and a golden apple, you get the gist. This zombified feature would also introduce a new potion. The Corruption Potion. This potion, when consumed or thrown on a mob, will turn it into a zombie, for you if you drink it, you will be drawn to the nearest living thing and kill it while not being able to control yourself. This zomvification process will not occur to monsters, skeletons, creepers, spiders etc.