Which of the following stimuli are not perceived through the skin of mammals?

The stimulus that is not perceived through the skin of mammals is "Light." Light is not perceived through the skin of mammals because it requires specialized cells in the eye, called photoreceptors, to detect it. These cells are not present in the skin of mammals and are only found in the eyes. On the other hand, the skin of mammals can perceive other stimuli such as pressure, pain, heat, and cold. Mechanoreceptors in the skin detect pressure, nociceptors detect pain, and thermoreceptors detect heat and cold. These receptors are specialized cells that respond to specific types of stimuli and send signals to the brain to be interpreted as touch, pain, or temperature.