The accompanying 'beastie' depiction, referred to as 'revolving bitch' or 'roll paunch' in laymen's terms, subsequently anticipates the need with sensitivity. In the middle of the fat, round head, that is provided with a strong, bent parrots beak, they have bulb-shaped eyes, which, placed on posts, protrude far out from both sides of the head. However, when it must cover a great distance, and has a relatively flat path to his disposal, he pushes his head to the ground and rolls himself up with lightning speed, at which time he pushes himself off with his legs- for as much as they can still touch the ground. In the rolled up state it exhibits the form of a discus, of which the eye posts are the central axle. By pushing off alternately with one of his three pairs of legs, he can achieve great speeds.
Insects are the inspiration for all the designs.
Tessellation Strictly speaking, tesselations are tiles that cover the plane without gaps or overlap. I also use the word for polyhedra that fill space without gaps or overlaps. It is the same notion extended to three dimensions. Hop's Escher Tiles. A page of Escher like tiles that work well for page backgrounds.