In particular, they see only in shades of blue and yellow — at least that's according to one online rumor. The dog blog Pets Reporter ... that is sensitive to light known as the retina.

A dog's brain interprets the excitation or suppression of these neurons as the sensation of yellow or blue, respectively. However, in dogs and in people who are colorblind, both red light and ...

Alice Gibbs is a Newsweek Senior Internet Trends & Culture Reporter based in the U.K. For the last two years she has specialized in viral trends and internet news, with a particular focus on ...