The animal depicted on a majority of seals at sites of the mature period has not been clearly identified. Part bull, part zebra, with a majestic horn, it has been a source of speculation. As yet, there is insufficient evidence to substantiate claims that the image had religious or cultist significance, but the prevalence of the image raises the question of whether or not the animals in images of the IVC are religious symbols. The most famous piece is the bronze "Dancing Girl" of Mohenjo-Daro, which shows remarkably advanced modelling of the human figure for this early date.