To solve problems: first, iron grates and wooden grates are dangerous as they have gaps and far from designability; secondly, a totally glass-walled circle may cause mental stress in an owner and an animal, as the visual field of the animal inside the circle is always excessively wide; and thirdly, many of conventional circles have no floor part or have a plastic made floor, therefore, the floor is slippery and cold and designability is remarkably spoiled, in addition, increase of possibility of loading to limbs of the inside animal is not completely excluded, and so forth.

(1) A pet circle is isolated from the outside by completely closing 4 sides without space by combining wooden, iron, plastic outer walls, inner wall processed with wall paper and glass windows without using iron grates and wooden grates. (2) Openable and closable curtains, roll curtains or iron madewooden shades are installed to window portions, wooden walls are partially applied to always narrow a visual field and wall paper is applied to the inside. (3) A foundation part is made of wood and design cushion sheets having 3 mm thickness are applied thereon.