Night vision pictures of animals can bring out a side of those furry, funny creatures that we may not like but which can never be unseen. Compared to many animals, human beings have poor night vision. Our eyes just don’t have receptors with enough spectral or intensity range to make out what’s going on in low-light conditions. For thousands of years, we had only our imaginations to rely on when it came to figuring out what was going on when the sun went down; before there were street lights, we had only the light of the moon to keep the darkness at bay. It’s only natural that human beings are, in general, afraid of the dark. It turns out we’ve been right to be afraid.