909.35 FAR is part of HUCO (Humane Care Operations), the Department of Defense Directive published by the Department of Defense. It is intended to improve the welfare, safety, and security of animals used in DoD research, testing, and training. It outlines standards for humane care and management, including minimum housing and animal care requirements, humane euthanasia and humane disposal methods, as well as providing guidance on animal welfare and research oversight.