 The Norway rat ("Rattus norvegicus"), house mouse ("Mus musculus"), European hare ("Lepus europaeus"), Indian mongoose ("Herpestes javanicus"), and green monkey ("Cercopithecus aethiops sabaeus") are the most notable examples.Pigs were introduced by the Portuguese in 1563 as a future food source; the introduction was successful and a feral pig population persisted up until the point of British settlement of the island, after which they became extirpated.The now extinct Barbados raccoon ("Procyon gloveralleni") is considered to have been endemic to the island; however even this species may have been introduced by Amerindians in pre-historic times.