Marmots and pika are both alpine species that reside above tree line in the mountains. They share habitat and usually co-exist reasonably well. They are both at-risk species due to climate change. Pika in particular are extremely vulnerable to high temperatures (above 80 degrees F), and that severely limits their ability to migrate to new areas.
Marmots eat and put on weight in the short alpine summer so that they can hibernate through the long cold winter. They're also one of the few species that are considered altruistic - that is, they remain in danger to call out warnings to their peers - a loud SQUEAK.".