The RSPCA (Royal Society for the Prevention of Cruelty to Animals) is the oldest and largest animal welfare organization in the world, founded in 1824 in England. It works to prevent cruelty to animals and promote kindness towards them. It began with a small group of founders and has grown to include over 170 branches across England and Wales along with dozens of animal centers and clinics. The RSPCA operates as both a law enforcement agency and animal welfare charity, working to reduce cruelty and care for animals in need.