American Pika (IMAGE) Ecological Society of America Caption Puff and lounge thermoregulation. American pikas can their moderate body temperature through posture (to some degree), squeezing into a fluffy ball, a body posture with minimum surface area, to hold in heat in winter (left), or stretching out the surface area of their bodies to cool down in summer (right). In recent years, pikas have been observed modifying their foraging habits in ways that may be behavioral adaptations to a changing climate. Credit Credit, J. Jacobson, from figure 4 of EA Beever et al (2017) Front Ecol Environ doi: 10.1002/fee.1502. Usage Restrictions include 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.