Lab rats may have won the cage fight to become model animals for research, but psychologists once looked to raccoons as the stars for studying intelligence. Black-masked raccoons served as favored ...

BOULDER, Colo. (AP) - A provocative anti-marijuana campaign aimed at Colorado youths has angered marijuana activists for its tag line, "Don't Be a Lab Rat." Now a school system is declining to display ...

The porphyrin scores were significantly higher in rats housed in small or large cages that were barren than in rats housed in small or large cages that were furnished with a PVC tube. The lowest ...