FIG. 1 is a perspective view of an anchor for a pet restraint embodying my new design wherein an animal and leash are shown in phantom and form no part of the claimed design;

FIG. 2 is a top, front and right-side perspective view of the anchor for a pet restraint;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a right-side elevational view thereof;

FIG. 6 is a left-side elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken line portions are not claimed.