If you pay closer attention, you can see that some of the designs rely on very deliberate placements of circles; for example, eyes of the monkey and owl, and the nose of the whale.
Those are just the obvious ones that I can immediately spot — there was probably a lot of careful consideration into the placement of circles in order to facilitate good looking arcs and circles that bring the animals to "life".
If you pay closer attention, you can see that some of the designs rely on very deliberate placements of circles; for example, eyes of the monkey and owl, and the nose of the whale.
Those are just the obvious ones that I can immediately spot — there was probably a lot of careful consideration into the placement of circles in order to facilitate good looking arcs and circles that bring the animals to "life".
Sure, you're not wrong. But a circle is just an arc of length 2pi * radius.