But neither Hercules nor Leo, who are at the center of a legal battle over whether chimpanzees should have the same legal rights as people, were physically present in the Manhattan courtroom.
The amended order suggests that the court has made no decision on whether the two research chimps at Stony Brook University can be treated as legal persons.
Manhattan Supreme Court Justice Barbara Jaffe's order Monday grants two research chimps the writ of habeas corpus. The decision, says Science magazine, effectively recognizes chimps as legal persons.
The New York Supreme Court's appellate division declined to extend habeas corpus to Tommy, a chimpanzee living in a cage at a trailer dealer in Gloversville, N.Y.
A lower court had tossed the case, but an appellate court heard oral arguments today. Lawyers said that Tommy, a chimp in New York, deserves the same rights as Homo sapiens.