mouse-goat

noun1

1. •
   An extinct genus of goat-antelope (†Myotragus), which lived on the Balearic Islands in the late Pleistocene and early Holocene.

   • Other island examples include pygmy hippos, pygmy deer, pygmy foxes, and the peculiar “mouse-goat”—an extinct species of dwarf sheep that had lived on the Balearic Islands of Spain. — 2011