Holder for Pet Chew Toy

FIG. 1 is a front and right perspective view of a holder for pet chew toy, showing my new design; FIG. 2 is a front view thereof; FIG. 3 is a rear view thereof; FIG. 4 is a left side view thereof; FIG. 5 is a right side view thereof; FIG. 6 is a top plan view thereof; and, FIG. 7 is a bottom plan view thereof. The broken lines illustrate portions of the holder for pet chew toy that form no part of the claimed design.