The ornamental design for a receiver for pettraining, as shown and described.
FIG. 1 is a front elevational view of a receiver for pet training showing my new design;
FIG. 2 is a rear elevational view thereof;
FIG. 3 is a left side view thereof;
FIG. 4 is a right side view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a bottom plan view thereof; and
FIG. 7 is a front perspective view thereof; and,
FIG. 8 is a back perspective view thereof.
The broken lines in FIG. 2 depict unclaimed features of the receiver for pet training that form no part of the claimed design but are shown for purposes of illustration.