The Polaris were group of wild origin, who were joined by Carravagio, a Hoax rover. Habituation progressed slowly due to the very wild nature of the four other animals. It was decided to suspend habituation, while concentrating on other groups. However, Carravagio was found dead in April 2008, and with him being the only habituated animal wearing the radio collar, the remaining members of the group could no longer be tracked nor identified. They were therefore considered last seen.