Conservation authority the IUCN has upheld the endangered status of the long-tailed macaque after rejecting the U.S. biomedical lobby’s challenge to downgrade it. Demand from research labs has fueled ...

Ninety-nine of the biscuits were placed in a freely accessible dish attached to the mesh of the front of the cage. Thirty-three biscuits were offered in a food puzzle. Twenty-five percent (4/16) of ...