During the 1930s the Nazis had elements that were supportive of animal rights, zoos and wildlife,  and took several measures to ensure their protection.  In 1933 the government created a stringent animal-protection law and in 1934, Das Reichsjagdgesetz (The Reich Hunting Law) was enacted which limited hunting.   Several Nazis were environmentalists (notably Rudolf Hess ), and species protection and animal welfare were significant issues in the regime.  In 1935, the regime enacted the "Reich Nature Protection Act" ( Reichsnaturschutzgesetz ). The concept of the Dauerwald (best translated as the "perpetual forest") which included concepts such as forest management and protection was promoted and efforts were also made to curb air pollution .