While changing the number of bags to accommodate the animal in response to the number of animals to be [problem] transportation, the animals can be efficiently transported, to provide an easy-to-use good animal transport bag system. Has a storage portion for storing An animal inside, the foundation bag 12 fitted with a carry handle 24 to the body 18 along with the attachment of the casters 22 on the bottom, on the upper side of the base portion bag 12 includes one or more of the upper layer portion bag 14 are arranged as needed in a sequential stacked state, the, at least the top and bottom of the animal transport bag system was if the bags 12 and 14 with a coupling device (16) for removably coupling It consists of 10.FIELD 1【課題】運搬する動物の数等に応じて動物を収容するバッグの数を変更しながら、動物を効率よく運搬できる、使い勝手がよい動物搬送用バッグ装置を提供する。【解決手段】内部に動物を収容する収容部を有し、底部にキャスタ22を取り付けるとともに本体18にキャリーハンドル24を取り付けた基礎部バッグ12と、基礎部バッグ12の上段側に順次積み重ねた状態で必要に応じて配置される1つ又は複数の上層部バッグ14と、を含み、少なくとも上下の各バッグ12、14どうしを着脱連結する連結装置16を備えた動物搬送用バッグ装置10から構成される。【選択図】図1