Other Canine reports in District of Columbia
1 case, best-documented first. Page 1 of 1.
We map claims, not creatures. A case is what some source says someone saw or heard, with the link to that source. It is not proof that anything was there, and a retelling counts once, not as a second sighting.

Other Canine · Rock Creek Park, District of Columbia · 1958
A squad of six Park police searched Rock Creek Park all night but found no sign of an animal or footprint.