Pet Bag

FIG. 1 is a perspective view of a pet bag showing the new design; FIG. 2 is another perspective view thereof; FIG. 3 is a front view thereof; FIG. 4 is a back view thereof; FIG. 5 is a left side elevational view thereof; FIG. 6 is a right side elevational view thereof; FIG. 7 is a top view thereof; and, FIG. 8 is a bottom view thereof. The broken lines shown in the figures are for the purpose of illustrating portions of the pet bag and form no part of the claimed design.