An animal protective device suitable for an animal includes a body wearing unit for wearing on the body of the animal, a body wearing unit for wearing on the body of the animal, and an adjustment unit connected between the body wearing unit and the body wearing unit.The adjusting unit includes a first adjusting member and a second adjusting member which are pivoted with each other along a pivoting axis, and a first limiting group which is arranged on the first adjusting member at intervals around the pivoting axis.The second adjusting member has a second adjusting end pivoting the first adjusting member and positioned between the first limiting groups.With the gradual recovery of the animal's injury, the first limit group can be moved and adjusted, and the angle of pivot swing of the second adjustment end relative to the first adjustment piece can be gradually relaxed, which is beneficial to the gradual recovery of the animal's range of activity.一種動物用護具,適於供一動物使用,並包含一供穿戴於該動物的身體的身體穿戴單元、一供穿戴於該動物的肢體的肢體穿戴單元,以及一連接於該身體穿戴單元及該肢體穿戴單元間的調整單元。該調整單元包括沿一樞接軸心彼此樞接的一第一調整件與一第二調整件,以及二繞該樞接軸心間隔地設置在該第一調整件上的第一限位組。該第二調整件具有一樞接該第一調整件並位於該等第一限位組間的第二調整端部。隨著動物的傷勢逐漸復原,該等第一限位組可被移動調整,逐漸放寬該第二調整端部相對該第一調整件的樞擺角度,能利於該動物的活動幅度漸恢復正常。