On May 8, the New York Court of Appeals denied an appeal to have two captive chimpanzees, Kiko and Tommy, recognized as legal persons with the right to bodily liberty and released to a chimpanzee sanctuary. The Court of Appeals allows only about 5 percent of appeals, so the legal outcome was not surp...

Last month, a group of 17 North American philosophers (myself included) filed an amicus curiae brief with the New York State Court of Appeals on behalf of Kiko and Tommy, two captive chimpanzees. The brief, informally known as “Chimpanzee Personhood: The Philosophers’ Brief,” supports a legal a...