This is a real Maned Forest Lizard (Bronchocela jubata) skull! Measuring ~1" long
Bronchocela jubata, commonly known as the maned forest lizard, is a species of agamid lizard found mainly in Indonesia on the islands of Singkep, Java, Bali, Sulawesi, Karakelang, Salibabu; Nias Island, Singkap Island, Borneo also in Thailand, Cambodia and Philippines.
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!