shivering is when an animal creates heat by shaking to keep the body warm. A cat is laying outdoors in the sunlight. Suddenly, a large, dark cloud blocks the sun and the temperature drops several degrees. The cat's physical reaction to this abrupt change will most likely be ['finding someone to dye them pink', 'involuntary body tremors and shudders', 'creating a new telephone system', 'hopping a plane to warmer climates']