The Germans viewed canines as being almost as intelligent as humans and attempted to build an army of fearsome 'speaking' dogs, extraordinary new research shows.
Hitler hoped the clever creatures would learn to communicate with their SS masters - and he even had a special dog school set up to teach them to talk.
The incredible findings show Nazi officials recruited so-called educated dogs from all over Germany and trained them to speak and tap out signals using their paws.
One mutt was said to have uttered the words 'Mein Fuhrer' when asked who Adolf Hitler was.
Another 'spoke' by tapping letters of the alphabet with his paws and was said to have speculated about religion and learned poetry.
The Germans hoped to use the animals for the war effort, such as getting them to work alongside the SS and guard concentration camps to free up officers.
The bizarre 'Wooffan SS' experiment has come to light after years of painstaking research by academic Dr. Jan Bondeson into unique and amazing dogs in history.
Dr. Bonderson, from Cardiff University, visited Berlin to scour obscure periodicals to build up a bizarre - but true - account of Nazi ideas.
Hitler was a well-known dog lover and had two German Shepherds, called Blondi and Bella. He famously killed Blondi moments before committing suicide in his bunker in 1945.