Spectacled Bears (IMAGE) American Museum of Natural History Caption Spectacled bears (genus Tremarctos) are solitary but large-brained. Credit R. Mickens/AMNH Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.