These are real Painted Bat Skulls (Kerivoula picta)!
These beautiful, orange, bats are found in Indonesia and Southeast Asia.
These skulls are roughly .75" long, and can be shipped worldwide!
They are sustainably hunted by the local peoples as a source of food and income. These bats have been studied and rated a level of "Least Concern" on the IUCN index of endangered/at-risk species due to their high reproductive rate and widespread distribution.