PROBLEM TO BE SOLVED: To enable a door to be easily opened/closed even in a narrow place without allowing a pet to escape when the pet is taken in/out.SOLUTION: The pet cage includes rails 9a, 9b on lower/upper side edges of an opening and slide bodies 10a, 10b slidable in a horizontal direction along the rails. Lower and upper parts of a door 16 on one side edge are supported pivotally on the slide bodies, thereby the door 16 being supported so as to be rotated to a front side. The door 16 is rotated to the front side with the slide bodies 10a, 10b as fulcrums and then the door 16 is moved in the horizontal direction, thereby the slide bodies 10a, 10b slide along the rails 9a, 9b and the door 16 is opened.SELECTED DRAWING: Figure 7COPYRIGHT: (C)2017,JPO&INPIT【課題】ペットを出し入れする際にペットを逃がしてしまうことなく、狭い場所でも容易に扉を開け閉めできるようにする。【解決手段】開口部の下側縁および上側縁にレール9a,9bを配設し、該レールに沿って水平方向に摺動可能なる摺動体10a,10bを設け、扉16の一側縁の下部および上部を該摺動体に軸支することにより該扉16を前方へ回転可能に支持し、該扉16を前記摺動体10a,10bを支点として前方に回転させたうえで該扉16を水平方向に動かすことで前記摺動体10a,10bが前記レール9a,9bに沿って摺動し、該扉16が開かれる。【選択図】図7