Thus while the skeleton (above) on view in the Museum is real, the model (below) is not, as there are no complete Dodo specimens. Some of the birds may have been eaten by the Dutch sailors who discovered them. However, the primary causes of their extinction were the destruction of the forest (which cut off the Dodo's food supply), and the animals that the sailors brought with them, including cats, rats, and pigs, which destroyed Dodo nests.