Provided is an absorbent article that can prevent the absorbent core from hindering movement of the hind limb when the hind limb of the pet animal moves. An absorbent article has a longitudinal direction Y and a lateral direction X orthogonal to the longitudinal direction Y, and includes a ventral region 11, a dorsal region 12, and a ventral region 11 and a dorsal side in the longitudinal direction Y. The intermediate region 13 located between the regions 12 and the absorbent body 50 having the absorbent core 51 are included. The absorbent body 50 is located only on the ventral region 11 side of the cutting line 48 through which the tail 1 of the pet animal 2 is inserted. It has the 1st absorption part 53 which opposes a mouth, and the 2nd absorption part 54 which opposes the site part which remove deviated from the urination opening, The absorptive core 51 is the 1st absorption part 53 and the 2nd absorption part in the vertical direction Y. And a first constriction portion (separation portion) 61 that separates the interlocking with 54. [Selection] Figure 8【課題】愛玩動物の後肢が動くときに、吸収性コアが後肢の動きの妨げとなるのを抑えることができる吸収性物品を提供する。【解決手段】吸収性物品１０は、縦方向Ｙ及び縦方向Ｙに直交する横方向Ｘを有し、腹側域１１と、背側域１２と、縦方向Ｙにおいて腹側域１１と背側域１２との間に位置する中間域１３と、吸収性コア５１を有する吸収体５０とを含む。吸収体５０は、愛玩動物２の尻尾１が挿通される切断ライン４８よりも腹側域１１側にのみ位置しており、横方向Ｘにおいて互いに対向する吸収両側縁５０ｃと、愛玩動物２の排尿口に対向する第１吸収部５３と、排尿口から外れた部位に対向する第２吸収部５４とを有し、吸収性コア５１は、縦方向Ｙにおける第１吸収部５３と第２吸収部５４との連動を分離する第１括れ部分（分離部分）６１とを有している。【選択図】図８
