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Several species of Malagasy hippopotamus (also known as Malagasy dwarf hippopotamus, Malagasy pygmy hippopotamus or Madagascan instead of Malagasy) lived on the island of Madagascar but are now believed to be extinct. The animals were very similar to the extant hippopotamus and pygmy hippopotamus. The fossil record suggests that at least one species of hippopotamus lived until about 1,000 years ago, and other evidence suggests that the species may have survived until much more recently. The taxonomy of these animals is not resolved and not widely studied. The various species are believed to have survived into the Holocene epoch.