狮子不太象啊，有点像犬，看脸的我只看出8张脸。其他的就不明白了，呵呵，智商比较低，感谢楼主！

很不错的图片啊，心理学里面有过这样的解说

3图中，左右上角隐藏的脸就不止9张了。

我觉得第4副是真人，因为在地上的阴影是压住拼图凹槽的

Picture,
1.) The pillar is square due to light effect become wrong image if looking the soldier.
2.) The lion is in middle of picture.
3.) First time look in this picture, i only see 7 face but but look carefully it 9 face show
     on picture. This picture very good challenge for my eyes but very interesting.
4.)The girl is in picture due shadow is clearing. First time already feel it.

For me the more challenge is picture 4 only and other picture usually .
Anyway have picture challege better not have. I support you.
Thank.

1柱子是圆的
2狮子在图的中间。眼睛是天鹅;中间人的帽子是狮鼻子
3人脸看出了7张.老人妇女小孩各一张，图中大头一张.右上角有一张.左上角有2张;
4人是画中人.