This is from his website. I really wish he and his wife had pets but I guess no one is perfect.
Bernie Sanders is an advocate of animal welfare and ensuring animals’ humane treatment. He has co-sponsored several pieces of legislation to protect the interests of animals and has recently received a 100 percent rating from the Humane Society Legislative Fund (HSLF).
Breeding and Captivity Practices: No animal should be subjected to inhumane commercial breeding habits nor should they be contained within neglected and inadequate shelters.
Livestock Issues: All animals that are raised for food should be treated humanely with minimum standards of care.
Cruelty Toward Animals: All animals must be protected from all forms of cruelty, suffering and abuse, whether in captivity or in the wild.
Protecting Wildlife: All wild animals must be protected from unnecessary danger to their livelihood and habitats, including threats to endangered species.