D.A.C.H.S.Haund 1 was a comic book about a bionic dog that Izzy Sinclair once likened to The Six Million Dollar Man. She said the acronym stood for "Dog Activated by Complex Hyper Sircuitry". When the Eighth Doctor noted that circuitry had to be spelled with an s for the acronym to work, she admitted that "it was a bit poor." (AUDIO: Izzy's Story)