Shock collars are illegal in many places around the world, but their legality varies by region. Countries such as Germany, France, Spain, the Netherlands, Austria, Denmark, Finland, Iceland, Norway, Sweden, Wales, the Canadian province of Quebec, Slovenia, and some regions of Australia have banned shock collars. In the UK, Wales has banned shock collars since 2010, but in England, despite planned legislation, shock collars remain legal as of now. In the US, most states allow shock collars, though some states like New York are working on banning them. Many animal welfare organizations oppose shock collar use due to the pain, anxiety, and potential harm they cause to animals.
In summary, the legality of shock collars depends heavily on the country and even specific regions within countries, with many places imposing bans due to animal welfare concerns.