The credit should go to  Henry Bergh. He was named the founder of American Society for the Prevention of Cruelty to Animals on April 10, 1866 in New York City
The American Society for the Prevention of Cruelty to Animals does really great work. They are a non-profit company that wants to prevent animal cruelty. Do you know when they were founded? The organization was founded in 1866 and they are located in the city of New York. That was a long time ago!     Who started the organization?
Following the creation of the Royal Society for the Prevention of Cruelty to Animals (RSPCA) in the United Kingdom in 1824 (given Royal status in 1840), Henry Bergh founded the American Society for the Prevention of Cruelty to Animals on April 10, 1866 in New York City on the belief that animals are entitled to kind and respectful treatment at the hands of humans, and must be protected under the law.