Blondi, born in 1941, was a German Shepard dog, gifted to Adolf Hitler as a puppy from Martin Bormann. Blondi was known to be Hitler’s favourite dog, and he kept the Blondi even after his move into the Führerbunker.

But on 29 April 1945, one day before his death, Hitler expressed doubts about the cyanide capsules he had received through Heinrich Himmler. To verify the capsules' effectiveness, Hitler ordered one to be tested on Blondi, who died as a result.

“Blondi's death had affected the people in the bunker more than Eva Braun's suicide,” said Erna Flegel, a German nurse.

More Info: en.wikipedia.org