The historical figure associated with the formation of the animal welfare movement is Henry Bergh. In 1866, he founded the American Society for the Prevention of Cruelty to Animals (ASPCA), advocating for the humane treatment of animals and leading to more widespread awareness around animal rights. Bergh's efforts helped to establish legal protections against animal cruelty, laying the groundwork for future animal welfare organizations and campaigns aimed at promoting the ethical treatment of animals.