I claim the ornamental design for a pet bib, as shown and described.
FIG. 1 is a first perspective view of the front of a pet bib showing my new design;
FIG. 2 is a second perspective view of the front thereof;
FIG. 3 is a third perspective view thereof;
FIG. 4 is a perspective view of the back thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a bottom plan view thereof;
FIG. 7 is a right-side elevation view thereof;
FIG. 8 is a left-side elevation view thereof; and,
FIG. 9 is a perspective view thereof, showing the pet bib in use.
The broken lines showing the animal wearing the pet bib are included for the purpose of illustrating environmental structure and form no part of the claimed design.
The broken lines on the pet bib illustrate stitching that forms no part of the claimed design.