Gray wolves (Canis lupus) from Canada, these were the first to call Yellowstone home since the creatures were hunted out of existence there early in the 20th century.

• 从20世纪初，黄石公园的灰狼被猎杀殆尽以来，这些来自加拿大的北美灰狼（Canislupus）是首次以黄石公园为家的狼群。