The mythical creature known for having horns and a tail is the satyr, which originates from Greek mythology. Satyrs are often depicted as half-human and half-goat, embodying the characteristics of both a man and a goat, including their fierce love for music, dancing, and revelry. They are commonly associated with the god Dionysus, the deity of wine and festivity. Satyrs symbolize the wild and untamed aspects of nature, often representing both fertility and the joyous chaos of the natural world in various myths and stories.