PROBLEM TO BE SOLVED: To provide a small animal housing case that prevents a lid body from being lifted as it is when the lid body is blocked by a case body.SOLUTION: In each of the upper inner portions of left and right side walls 6, 7 constituting a case body 1, a lid body support 10 on which the left and right ends of the lid body 2 are placed is provided. Projecting parts 11, 11 are also provided, which are formed in a prescribed width so as to protrude inwardly on the inner side of the left and right side walls and to the upper side of the lid body support. In addition, at the left and right ends of the lid body, notched parts 16, 16 are respectively provided having a size that allows the projecting parts of the case body to pass through. At least one end of the projecting parts of the case body is not situated within the range of the notched part of the lid body when the lid body blocks the case body.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2019,JPO&INPIT【課題】 蓋体がケース本体に閉塞された状態においては、そのままでは蓋体が持ち上がらないようにした小動物収容ケースを提供する。【解決手段】 ケース本体1を形成する左右の側壁6,7の内側上方のそれぞれに蓋体2の左右端部を載置する蓋体支持部10を設けると共に、左右の側壁の内側であり蓋体支持部よりも上方に内側へ突出する所定幅に形成された突出部11,11を設ける。また、蓋体の左右両端部のそれぞれにはケース本体の突出部が通過可能な大きさの切欠部16,16を設ける。このケース本体の突出部は、蓋体がケース本体を閉塞した状態にある時、少なくともその一端が蓋体の切欠部の範囲内に位置していない。【選択図】図2