Back to patterns.

http://dailypost.wordpress.com/category/photo-challenges/

So by the way re the zebra –  Form of camouflage called disruptive coloration that breaks up the outline of the body.

In the evening or dawn when predators are most active zebras seem to look indistinct. = an Optical illusion or what?

 

Some patterns can create optical illusions, example the one below.

eye of the dragon

Can you see it move- and does it really?

http://www.moillusions.com/2013/03/eye-of-the-dragon-illusion.html