Dorothy Bovine is the heroine of Lash Holstein: Space Cowdet in Muppets Tonight episode 202. She is a beautiful, single ranch owner who also owns a plutonium ore mine, which Moo-Ing wants control of. Moo-Ing also wants Dorothy to be his bride, but not if Lash Holstein has anything to say about it!
Her name is a reference to 1960s film actress Dorothy Provine, best known for playing Emmeline Marcus Finch in It's a Mad, Mad, Mad, Mad World, and who also appeared in Disney's That Darn Cat! and The 30 Foot Bride of Candy Rock with Lou Costello.