tapetum lucidum
-
Why Do These Trippy Reindeer Eyes Change Colour With The Seasons?
Dogs and cats are adorable creatures by day, but under the cover of night their eyes seem to shine like demon spawn. That’s the work of the light-reflecting tapetum lucidum, a layer of tissue that sits right behind the retina. As it turns out, that same tapetum lucidum just might be responsible for turning reindeer…