Vivisection
Nazi Germany was the first country to ban vivisection in the world, enacting a total ban in April 1933. The measure to ban vivisection was a huge concern and was put forth to the Reichstag as early as 1927. High ranking Nazis such as Hermann Goring, Heinrich Himmler and Adolf Hitler were very concerned about animal conservation, particularly pertaining as to how animals were butchered. Most current laws in Germany, and indeed the world, are derived from the laws put forth by the Nazi Party. This is, obviously, incredibly ironic as while on the one hand they defended the lives of brute animals, whilst on the other hand cruelly slaughtered Catholics, homosexuals, gypsies, and jews.
Hermann Goring, who was established as the Prime Minister of Prussia, had this to say:
An absolute and permanent ban on vivisection is not only a necessary law to protect animals and to show sympathy with their pain, but it is also a law for humanity itself…. I have therefore announced the immediate prohibition of vivisection and have made the practice a punishable offense in Prussia. Until such time as punishment is pronounced the culprit shall be lodged in a concentration camp.”
https://listverse.com/2011/01/31/top-10-things-the-nazis-got-right/