The Bulldog occurrence is located on a southeast facing slope, west of Matthew Creek, at an elevation of approximately 1600 metres.

The area is underlain by argillites and quartzites of the middle Proterozoic Aldridge Formation (Purcell Supergroup). These have been intruded by gabbro sills and dikes of the middle Proterozoic Moyie Intrusions.

Locally, several trenches and pits and a former adit expose quartz veining, up to 12 metres wide, in slatey argillites, mica schists, quartzites and a meta-diorite over an area of approximately 700 metres by 200 metres in a northwest direction. Sulphide mineralization is reported to include galena, chalcopyrite, covellite, bornite, pyrite, pyrrhotite and possible molybdenite. Tourmaline and graphite are also reported.

Two more areas of mineralization are reported approximately 1.4 and 1.7 kilometres to the southwest. The first consists of small sulphide lenses of pyrrhotite-chalcopyrite-bornite, in quartz boudins with limonite staining in a chloritic and micaceous host, whereas the later consists of an oxidized and fractured pegmatite. In 2010, two samples (CK09-118 and 119) from the first zone assayed 0.156 and 0.168 per cent copper, respectively, whereas a sample (CK09-139) from the second zone assayed 0.366 per cent lead and 5.8 grams per tonne silver (Assessment Report 31614).

Historical workings in the area consist of several pits and trenches, an adit and an ore or waste dump by the adit. In 1985 and 1986, Amstar American completed programs of geological mapping, soil and rock sampling and ground and airborne geophysical surveys on the area as the Denver claims. In 1994, a program of rock and soil sampling and geological mapping was completed. In 1996 and 1997, Sedex Mining completed programs of soil sampling and a 52.5 line-kilometre gravity survey on the area as the Ham claims. In 2009 and 2010, Kootenay Gold prospected the area as the MS Peg property and collected rock samples. In 2014, the area was prospected by C. Kennedy, who collected rock samples.