The ornamental design for a dogbed, as shown and described.
FIG. 1 is a top, front perspective view of the dog bed.
FIG. 2 is a front view of the dog bed.
FIG. 3 is a back view of the dog bed.
FIG. 4 is a right side view of the dog bed.
FIG. 5 is a left side view of the dog bed.
FIG. 6 is a top view of the dog bed.
FIG. 7 is a bottom view of the dog bed; and,
FIG. 8 is a top, front perspective view of a second embodiment of FIG. 1.
The broken lines showing the tire, the wording “Logo”, and, the border surrounding the word “Logo”, depict environmental subject matter and do not form part of the claimed design.