Decaying Zombie Pigman

Origins
When the zombie disease in Zombie Pigman has almost consumed any remaining traces of pig, it becomes a Decaying Zombie Pigman. During the First Creeper Invasion, Herobrine enlisted thousands of them to fight for him and operating his CR33P3R factory.

Swine Flu
When a Decaying Zombie Pigman bites any creature except the player, they will become corrupt. Here are all the transformations that can happen:

Horse- Night-Mare

Pegasus-Batwing
Villager-Zombie Villager

Mooshroom- Minishroom

Cow-Minitaur

Sheep-Rabid Goat

Pig-Zombie Pigman

Chicken-Diseased Chicken

Rabbit-Killer Bunny

Bat-Batwing

Tactics
Decaying Zombie Pigmen usually carry either a Golden Sword, sometimes enchanted, or a Bow. Without a weapon, they do one and a half hearts of damage. If a player is on a Horse, Pegasus, or Pig, The Decaying Zombie Pigman will bite it.

Drops
When killed, a Decaying Zombie Pigman will drop Rotten Flesh, Gold Ingots, Arrows, and rarely a Golden sword or Bow.