Earth Hounds, as Explained by Professor Xargle By (author): "Jeanne Willis"Genres:Childrens books Picture Books Animals books Aliens books ISBN0525446001ISBN139780525446002AsinEarth Hounds, as Explained by Professor XargleOriginal titleDr Xargle's Book of Earth HoundsAlien Professor Xargle teaches his class of extraterrestrials about the quirky behavior of a favorite earth animal.