This brain teaser, from UK-based online printing company instantprint, challenges you to find the animals hidden among the fallen ... then why not try some quiz questions instead?
Fancy trying to shatter the 15-second record? Take a look at the image and see if you can spot the well-disguised animal ... Can you unlock ALL the hidden images? We've got a whole gallery ...
Optical illusions are images that challenge your brain and observation skills and make you believe that there is no hidden object or animal ... in which you have to find a hidden frog in the ...