Any animal capable of seeing in 3D, such as humans, have the ability to visually perceive depth. No other insect but the Praying mantis is capable of this. Because of this, this predatory insect excels at detecting prey that comes within striking distance, but unlike us, their depth perception only works when the prey is moving.

In a new study, scientists glued the world’s tiniest 3D glasses (above, left) on 20 praying mantises (Sphodromantis lineola) and showed them a series of movies depicting patches of moving dots that were camouflaged against a matching background, and which are perceived as potential prey items to the insect.

The insects tried to catch these dots that appeared to be within 2.5 centimeters of their perch. And they coul ...