To provide a jacket for animal used for percutaneous dosage which enables proper percutaneous dossage of medicine and does not take so much time with simple loading or unloading by preventing deviation of a medicine coated part to be applied on an animal and massing biased to one point.

Openings 13 and 13 are formed at the front of a stretchable cloth piece 12 adapted to be wound on the perimeter of a trunk part of an animal to respectively insert both forepaws thereinto, and connection parts 14 and 14 are provided at both ends of the stretchable cloth piece 12 in the circumferential direction of the trunk part of the animal to connect both the end parts thereof, while a jacket body 11 with the band-shaped body side joint parts 14 and 14 and a medicine coated surface 24 for percutaneous dosage to be stuck on the surface of the trunk of the animal are arranged on the side of the internal surface facing the trunk part of the stretchable cloth piece 12. A medicine coated part 21 is provided on the rear side of the coated surface being provided with coated side joint parts 25, 25 and 25 to be joined on the body side joint parts 14 and 14.