(702) 435-9518 The Las Vegas Valley Humane Society is dedicated to improving the welfare of animals. Its primary purposes include: The prevention of cruelty to animals. The relief of suffering among animals. The extension of humane education. Reducing the overbreeding of domestic amimals - primarily cats and dogs- through public education and sterilization programs. Improving the tragic plight of animals used in biomedical research and testing. Protecting endangered wildlife.