To provide a cardboard box usable also as a pet house.SOLUTION: The cardboard box of a substantially rectangular parallelepiped is provided with a printed matter 30 of a door of a size printed on the side surface and capable of passing pet, printed matter 32 of a window printed on the side surface, printed matter 30 of the door and printed matter of the window And a cut line printed on three sides of 32, cuts are made along the cut line, and the printed matter 30 portion of the door and the printed matter 32 portion of the window are bent outward along the connecting side 42, whereby the pet A door opening 44 and a side viewing window 46, and is used as a pet house 80 .(FIG.【課題】ペット用ハウスとしても使用可能な段ボール箱を提供する。【解決手段】略直方体の段ボール箱であって、側面に印刷されペットが通過可能な大きさの扉の印刷物30と、側面に印刷された窓の印刷物32と、扉の印刷物30及び窓の印刷物32の3辺に印刷された切り取り線と、を有し、切り取り線に沿って切り込みを入れ、扉の印刷物30部分及び窓の印刷物32部分を接続辺42に沿って外側に折り曲げることで、ペット用出入口44と側面覗き窓46を形成しペット用ハウス80’として使用する。【選択図】図2
