... the mouth and that they eventually resort to selective brain cooling. * Author for correspondence ( asb000@uit.no ) 15 8 2011 © 2011. 2011 Rangifer brain temperature thermoregulation selective brain cooling panting When ungulates are under heat stress, it has been assumed...

... temperature was lowered below blood temperature. Selective brain cooling, however, was not present in all ostriches, and was not tightly coupled to the prevailing body temperature. Brain temperature was maintained within narrow daily limits of approx. 2°C, and varied significantly less than blood temperature...