Armadillos – Why would Santa be concerned about their eyesight?
The eye has photoreceptor cells called rods and cones that are found in the retina which is in the back of the eye. These specialized cells allow us to see light and colors. Rods are highly sensitive to light and function in night vision. Cones are responsible for detecting a wide spectrum of light that allows color vision.
Armadillos eyes do not have the light-detecting cells called cones. Since the armadillos eyes do not have cones, the armadillo has colorless and fuzzy vision. The armadillo’s eyes do have rods, which are highly sensitive light-receptive cells. The rods are so sensitive to light that these nocturnal animals are practically blind in daylight or in bright light.
Armadillos, means “little armored ones” in Spanish. They have bony plates that cover the back, head, legs, and tail of these unusual looking animals. They are the only living mammals that wear these bony shells according to National Geographic, Armadillos.