It only takes one to tame an arthropluera it is you are then able to do the most difficult cave
Use before killing lots of baby gigas lots of xp
Use to tame the rainbow centipede in caves and on scorched earth
You can get black pearls from squids and lobster things in the ocean.
Use it before completing swamp or yeti cave for extra xp
Use it before birthing/taming a reaper
This does work on tames, I say this just to make sure that every one know.
Unsure if this works and currently no way to test it but take a dump at a toilet eat this and finds a 4x explorer note for most exp ever?
Use it before trophy room pursuit(mobile only)
The deathworm horns can be used in place of rhino horns