Thousands of Reddit users were left horrified when they stumbled upon the bulging eyes of a rat. A new photo has shown the creature wart-and-all and many were unaware its eyes were so large.

You have razor-sharp vision if you can spot rat hiding in mind-boggling optical illusion. Optical illusions are a great way to test yourself - and this one is no different.

Many rodents use whiskers to feel their way around their world. But rats appear to take this one step further, using special, antennae-like whiskers above their eyes to sense subtle air movement.

Week in science, big, bulging bug eyes edition Friendly rats, scary predators, head-butting bees, and news on planets near … Ars Staff – Dec 10, 2011 9:00 am | 2 ...