The connotation is that a "dog robber" will obtain what ever their superior wants by any means necessary, legal or otherwise.
James Garner played the part of a typical "dog robber" in the movie, "The Americanization of Emily."
by Donnie Gene Howard September 06, 2006
1 more definition
Military slang for aides of general officers.
Bill served as General B. Fuddle's dog robber while on post.
by Duckbutt August 23, 2005