Bolivia has enacted what animal rights defenders are calling the world’s first law that prohibits the use of animals in circuses. A handful of other countries have banned the use of wild animals in circuses, but the Bolivian ban includes domestic animals as well. The law, which states that the use of animals in circuses “constitutes an act of cruelty,” took effect on July 1 and operators have a year to comply, according to the bill’s sponsor, Rep. Ximena Flores. The law was proposed after an undercover investigation by the nonprofit London-based group Animal Defenders International, or ADI, found widespread abuse in circuses operating in Bolivia. Flores said authorities are seeking to keep circus operators from killing animals they can no longer use.