PURPOSE: To suck the undigested things within the stomach of an animal, the dung within the rectum, etc., with proper suction force by interposing a suction force adjuster, where a hollow airtight can be attached to surround the ventilation port formed at the the body of the suction force adjuster and an intake adjusting mechanism is formed at the wall of the airtight can, in the hose of vacuum cleaner.

CONSTITUTION: An water-adsorbing type or dry and wet both-use type on the market is used for a vacuum cleaner, and a suction force adjuster 3 is connected to the tip of the suction hose. This suction force adjuster 3 has a cylindrical suction force adjuster body 11 where a hose connection port 12 is formed at the rear end and an extension hose connection port 13 is formed at the head, and a ventilation port 14 is made at the front on the body 11. And, a box-shaped hollow airtight can 15 is made in a body outside the body 11, and a triangular window 16 and a mobile door 17 in the shape of a sliding door are attached as an intake adjusting mechanism to the ceiling, and by moving this mobile door 17 in the direction of an arrow D, the area of opening of the window 16, that is, the adjustment of intake is performed.