PROBLEM TO BE SOLVED: To provide a posture holding base for a pet which stably holds the whole body of a pet including the head without blocking his/her view and can make the pet feel relaxed, and which does not make the pet feel a local pressure and can prevent the pet in the prone posture from carelessly slipping down from the holding base.SOLUTION: A posture holding main body 1a consists of a trunk placing part 2 on which the trunk of a pet can be placed, a head placing part 3 which is disposed on the front side of the trunk placing part 2, and a hip placing part 4 which is disposed on the back side of the trunk placing part. Stopper parts 2a, 2b, which prevent the positional dislocation of the trunk of the pet in the prone posture, are disposed on the right and left ends of the trunk placing part 2 respectively.
