<；P>；PROBLEM TO BE SOLVED: To provide a tray for a pet, which is capable of freely adjusting the width. <；P>；SOLUTION: The tray for the pet has protruding walls at the peripheral edge formed by overlapping a part of a plurality of plate materials 3 and 5 having the protruding walls 6 in a part of the periphery thereof. The tray for the pet is composed by regulating the overlapped length in the plurality of plate materials 3 and 5 so that the width of the tray can be adjusted. Furthermore, the tray for the pet is installed under the circle having stretch functions in the width direction and the stretch pitch in the width direction of the circle and the stretch pitch in the width direction of the tray for the pet are set at the same pitch. <；P>；COPYRIGHT: (C)2008,JPO&INPIT
