Clarus the dogcow(MOOF)

The dogcow, named Clarus, is a bitmapped image designed by Apple for the demonstration of page layout in the classic Mac OS. The sound it makes is "Moof!", a portmanteau of "moo" and "woof".[1] Clarus became the archetype of surrealistic humor in the corporate culture of the original Macintosh group, particularly as the mascot of Apple’s Developer Technical Support as officially documented in Technote