It is a terracotta bull head, what more is there to say? Well, this vase is a type of rhyton, a pouring vessel typically molded in the form of an animal. Rhytons were used to either drink from, or pour out an offering to a god in a ritual known as libation. Either way, they were not meant for everyday personal use. As the bull is a sacred animal in Minoan culture, this vase was likely used in a religious ritual.
Photo credit / The Metropolitan Museum of Art Open Access New York, New York