Was this designed? or can evolution be credited? The Resilient Brain of the Arctic Ground Squirrel?
Every two or three weeks during hibernation, the arctic ground squirrel shivers itself back to its normal body temperature of 97.5 degrees and does not get cold again for 12 to 15 hours. Researchers say that this warming period plays a role in the brain’s survival. During hibernation the arctic ground squirrel’s head seems to remain slightly warmer than the rest of its body. During lab experiments, the neck temperatures of the squirrels never dropped below 33.3 degrees. Here is the rest of the short article, very interesting!