PROBLEM TO BE SOLVED: To provide a limb fixture settable easily on an animal such as a mouse or a rat, and to provide a fixing method.SOLUTION: A limb fixture for an animal includes a string-like body 2 having a loop part 4 to be hooked on a joint part 33 of a front limb or a rear limb 31 of the animal 30, a hollow body part 1 having on one end, an insertion opening 10 into which the string-like body 2 is inserted in the state where the joint part 33 is hooked on the loop part 4, including limb parts 34, 35 near the joint part 33, and a fixing part 3 for fixing the string-like body 2 to the body part 1.SELECTED DRAWING: Figure 5COPYRIGHT: (C)2017,JPO&INPIT【課題】容易にマウスやラットなどの動物にセット可能な四肢固定具と固定方法を提供する。【解決手段】動物の四肢固定具は、動物30の前肢又は後肢31の関節部33に引っ掛けるためのループ部4を備える紐状体2と、この紐状体2を、ループ部4に関節部33を引っ掛けた状態で、関節部33の近傍の肢部34、35を含めて挿入するための挿入開口10を一端に有する中空状の本体部1と、紐状体2を本体部1に固定するための固定部3とを備えている。【選択図】図5