PROBLEM TO BE SOLVED: To provide a panel body for a pet provided with a door slidably, which is a panel body for the pet capable of preventing a clearance between meeting parts of the door from opening, and to provide a gate for the pet using the same, a cage and a circle.SOLUTION: Concerning a panel body for a pet, the panel body includes an opening part and a slide type door for opening/closing the opening part, and has clearance regulation means for preventing opening of the clearance between meeting parts of a door rear part and the opening part side end part of a non-opening part of the panel body in the state where the door is closed.
