All mods I've found, or made that allow extra mammals in Dwarf Fortress to be milked. Given that DF simulates so much, it seems an arbitrary limitation to only be able to milk domestic mammals and a handful of obscure wild animals. If milkable tapirs are in vanilla, surely anything goes. If there is more than one to chose from I will just list my personal preference to try and ensure that all mods in this collection work together. For the same reason any dependencies are also included.

*I know the list looks a little egomaniacal. I was recently making compatibility patches for other milkable creatures and discovered that none of the ones I could find were actually loading into the game, due to incorrect filenames. So to my knowledge, there are no other mods that add milkable creatures right now.