Especially the Pika, which needs very specific temperatures that are only found at high elevations to maintain thermoregulation. Global warming means that they

Especially the Pika, which needs very specific temperatures that are only found at high elevations to maintain thermoregulation. Global warming means that they will literally die of heat exhaustion during future summers as the temperature increases at higher elevations. https://en.wikipedia.org/wiki/Pika https://en.wikipedia.org/wiki/Pika Edit: specifically the American Pika https://en.wikipedia.org/wiki/American_pika https://en.wikipedia.org/wiki/American_pika