bitzer; bitser; bitza noun a dog of mixed breed AUSTRALIA,1936 A shortening of the phrase “bits of this and bits of that”.
[T]his young navvy began to sool their “bitza” on with a stick. — Patsy Adam-Smith, FolkloreoftheAustralianRailwaymen, p. 154, 1969
The two other regular companions on these trips were Bill’s mare Les Thorogood and Bill’s dog Tiger, a real Heinz 57 varieties bitser if ever I saw one. — Rex Hunt, TallTales–andTrue, p. 126, 1994