This is a real Sun Skink Lizard Skull! Approximately 23mm in length (size varies, depending on specimen)
Eutropis multifasciata, commonly known as the East Indian brown mabuya, many-lined sun skink, many-striped skink, common sun skink or as golden skink, is a species of skink.
Skulls are natural products and therefore not always perfect. Not all specimens look exactly the same and therefore slight deviations in patterns, size and color are possible. They are all cute regardless though!