Nipper was a Fox Terrier/Bull Terrier mixed breed dog that became the symbol for RCA Music. A painting of him posed with an ear cocked towards an old-fashioned victrola became their logo. (...) The Baltimore Nipper (...) was installed on the RCA building in Baltimore. This building was torn down in the 1980s but Nipper and his Victrola were saved and moved around for awhile. They now sit on the roof of the Maryland Historical Society.
http://www.agilitynut.com/critters/dogscats.html
http://en.wikipedia.org/wiki/Nipper