Pikas are small, herbivorous mammals that belong to the family Ochotonidae. They are closely related to rabbits and hares but are distinct in their appearance and behavior. Pikas typically have rounded bodies, short limbs, and no visible tail. They are found in mountainous regions across North America, Europe, and Asia, where they inhabit rocky slopes and alpine meadows. These animals are known for their unique vocalizations and their habit of collecting and storing vegetation, known as "haypiles," for winter food. Pikas are sensitive to temperature changes, making them vulnerable to climate change, which threatens their habitats and survival.