RPG Menagerie: Black Pudding

There is such a thing in D&D as an "ooze" family of creatures, no doubt because words like "ooze" and "slime", while basically meaning the same thing, are fun, icky words to slap onto a monster. But also because their appearance as liquid or fluid makes them living traps for unwary delvers. So there are many, with a wide variety of colors and levels of viscosity. The "black pudding", though?…