The ruling is the latest twist in a long-running dispute over where dozens of federally-supported former research chimps should live out the remainder of their days.
Two decades of research in Nouabalé-Ndoki Park in the Republic of Congo found the primates foraging alongside each other, wrestling, seeking out their pals — and occasionally making threats.
All chimps managed by the National Institutes of Health that are currently eligible to go to a sanctuary have been moved there, but animal welfare advocates say more should be allowed to go.
Research on bonobos, one of our closest and gentlest relatives, may show how humans evolved to share and cooperate on a massive scale.
The animals returned to their enclosure at the Belfast Zoo after a short time, but not before alarmed visitors came face to face with at least one chimpanzee.
She's learned a lot about chimpanzees. But what has she learned from them has given her a new mission: improve the health of the planet.
The judge wrote that someday they may get legal rights, but courts don't embrace change quickly. The chimps are held by Stony Brook University.
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.