A pikas work is never done. They live high on the alpine tundra and do not hibernate. They spend the short summer months constantly harvesting grasses. They use these grasses to turn into hay and live off of during the long brutal winter. It’s pretty astonishing to watch these little creatures working literally all day. They run from the rocks to the grass, taking bundles of grass to their winter storage spot. Sadly the numbers of Pika populations are on the decline. They are very sensitive to high temperatures and are considered to be one of the best detection systems for global warming. They can die in a matter of hours if exposed to temperatures of more than 80 degrees.