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. The National Museum of Japanese History estimates that the total number of dogū is approximately 15,000, with The Japan Times placing the figure at approximately 18,000. 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.). Everyday ceramic items from the period are called Jōmon pottery. Some scholars theorize the dogū acted as effigies of people, that manifested some kind of sympathetic magic. For example, it may have been believed that illnesses could be transferred into the dogū, which were then destroyed, clearing the illness, or any other misfortune. Dogū are made of clay and are small, typically 10 to 30 cm high. Most of the figurines appear to be modeled as female, and have big eyes, small waists, and wide hips. They are considered by many to be representative of goddesses. Many have large abdomens associated with pregnancy, suggesting that the Jomon considered them mother goddesses. According to the Metropolitan Museum of Art, these figurines "suggest an association with fertility and shamanistic rites". The dogū tend to have large faces, small arms and hands and compact bodies. Some appear to wear goggles or have "heart-shaped" faces. Most have marks on the face, chest and shoulders, that suggest tattooing and probable incision with bamboo. "Heart-shaped (or crescent-shaped eyebrow)" figurine "Horned-owl type" figurine "Goggle-eyed type" (shakōkidogū) figurine "Pregnant woman type" figurine File:Figurine Dogu Jomon Musée Guimet 70608 3.jpg|''Dogū'' figurine, Jomon.