Wallrus

Wallrus: noun. A slug-like animal known to live inside walls and feed on wallpaper. These creatures were first discovered in the wreck of a house in 1973 in Colorado. A house had collapsed under mysterious circumstances, which were explained when an infestation of wallri had been discovered in the walls of the house, having eaten the supports out of desperation and lack of wallpaper. Since then the animals have been included on various lists of most hideous creatures in the Universe, easily competing with Vogons, Bith and the Ravenous Bugblatter Beast of Traal. The leading expert on these critters is Dr. T. Apeworm, who has published various academic papers on the topic of these dangerous and yet fascinating beasts.