Most have a thin reflective layer at the back of the eye that helps them see in the dark. (newscientist.com)
The complete sunshield consists of five thin reflective layers of plastic that bounce heat back into space — and any energy they do absorb radiates out between the layers. (discovermagazine.com)
Dogs, cats and almost all domestic animals have a special reflective layer in the back of the eye termed the tapetum, which enhances nocturnal vision. (scientificamerican.com)