The purpose of the present invention is to provide an absorbent article for pets that fits the body of a pet in an excellent manner and is able to properly absorb liquid bodily waste such as urine. This absorbent article (1) for pets has mutually perpendicular longitudinal, width and thickness directions and is worn in such a way that the longitudinal direction extends around the body of a pet. The absorbent article (1) for pets comprises an absorbent body (4) that is provided with a deformation guide part (40) extending in a direction intersecting with the longitudinal direction in a plan view.
