This mind-boggling illusion has left people scratching their ... difficult as they blend into the white background and the tiger's white bellys. Here is another clue for people that might need ...

Optical illusion personality tests ... There are two main animals hidden in the image: A tiger and a monkey. And based on ...

This optical illusion has baffled even the most observant ... Persistence pays off with a puzzle like this, and every tiger you find is a small victory. Have you found them all yet?