Spiny lizards in New Mexico (IMAGE) Clemson University Caption Spiny lizards in the New Mexico desert regulated their temperatures better when shade was dispersed in several small clusters compared to one large clump. The study says models that predict species extinction need to factor in the spatial dispersion of shade. Credit Michael Angilletta, Arizona State University, Michael Sears, Clemson University Usage Restrictions With photo credit 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.