Sign on a road with volcanic stratified rocks in the background, Parque Nacional del Teide, Tenerife, Canary Islands, Atlantic, Spain, Europe

A Collared Pika (Ochotona collaris) sounds an alarm to nearby Pikas to alert them to a possible danger or to simply communicate with others. Pikas do not hibernate and are actually small members of the rabbit family. Hatcher Pass area near Palmer, Alaska in South-central Alaska, late summer; Alaska, United States of America