Dogū are small humanoid and animal figurines made during the later part of the Jōmon period (14,000–400 BC) of prehistoric Japan. Dogū come exclusively from the Jōmon period, and were no longer made by the following Yayoi period. There are various styles of dogū, depending on the exhumation area and time period. According to the National Museum of Japanese History, the total number found throughout Japan is approximately 15,000. Dogū were made across all of Japan, except Okinawa. Most of the dogū have been found in eastern Japan and it is rare to find one in western Japan. The purpose of the dogū remains unknown and should not be confused with the clay haniwa funerary objects of the Kofun period (250 – 538 C.E.).