The article discusses the attitudes of the Nazi Party in Germany to the treatment of animals and their opposition to a range of animal uses. For example, the Nazis insisted on the humane euthanasia of pets while gassing millions of people labeled as undesirables in the concentration camps.
Herzog, Harold, 2011. Was Hitler a Vegetarian? 'Animals and Us,' Psychology Today, 17 November. https://www.psychologytoday.com/us/blog/animals-and-us/201111/was-hitler-vegetarian-the-nazi-animal-protection-movement