Ethicist Peter Singer says a case calling for a pair of chimpanzees to be recognised as people by the courts could help “narrow the gulf” between humans and animals.
A New York judge recently agreed to hear a case of two chimpanzees, which essentially questions whether the animals should be viewed as people in the eyes of the law.
The chimpanzees are being held at Stony Brook University in New York for biomedical experimentation, and a lawyer representing the animals argues they are being unlawfully detained.
Justice Barbara Jaffe, from the New York State Supreme Court, is presiding over the case and has ordered, in the first instance, that the state provide an explanation as to why the two young chimps should not be released from captivity.
On Monday's Q&A program, Mr Singer said this could be the first sign of a court granting personhood rights to animals.
"That provides the first glimmer of an opening — I wouldn't put it further than that — that possibly the courts are not going to class chimpanzees simply as property, but are going to say that they may have some legal right to be free or to be sent to a sanctuary or something of that sort," he said.