The main animal humane societies in the UK are the Royal Society for the Prevention of Cruelty to Animals (RSPCA) (founded 1824) and its offshoots, the Scottish Society for the Prevention of Cruelty to Animals (SSPCA) and the Ulster Society for the Prevention of Cruelty to Animals (USPCA). There is also the People's Dispensary for Sick Animals (PDSA), founded in 1917, to treat the sick and injured animals of the poor, and numerous other animal rescue charities for wildlife, working animals, and domestic pets.