Ooh, this is an excellent viral video clip ad by Samsung: 10 optical illusions in 2 minutes. The dino robot alone is worth it! Hit play or go to Link [YouTube] - Thanks Elijah Jones!
If you like the dino robot, you can make your own (smaller) version - Previously on Neatorama: Dragon Paper Sculpture.
and very cool your blog
thanks
Thales
http://lista10.org
The Bull.. I dunno. Maybe that multiple stills give the illusion of movement? We see that everyday in the theater or on TV.
I always have problems seeing optical illusions, even really simple ones, because I have no depth perception. Some things which seem odd to you look the same way to me all the time... which is why I can't tell the difference between a flat TV picture and something real (I didn't even realise that there was any difference until I saw an optical illusion show which took advantage of this).