An absorbent article for an animal includes: a band part that is fitted in a freely detachable manner around a torso of an animal and has a torso-facing surface facing the torso of the animal when it is worn, and a non-torso-facing surface located on a side opposite the torso-facing surface； and an absorbing body section disposed along a dorsal region, lower crotch region and abdominal region of the animal and having at least one end, from among a dorsal side end located on a dorsal region side of the animal and an abdominal side end located on an abdominal region side of the animal, engaged and fastened in a freely detachable manner with the band part.
