The Lamassu is walking?

When first looking at the human-headed winged lion called a Lamassu, you get the impression that it is moving. It actually looks like it is walking. After looking closer you notice that the animal has five legs instead of the normality of four. This style of art was to make the figure look as if it is at a stand still when viewed from the front but if viewed from the side it actually looks as if it is moving. The Lamassu looks like it is in stride, but if you just sit and stare at it from an angle to me it looks pretty weird because we commonly think of four legged animals and not five. This ancient server is also usually female; boy the Babylonian's sure don't know how to flatter a woman!!