Marikina City Mayor Maan Teodoro on Monday, Aug. 31, assured the public that appropriate charges will be filed against a man who was seen in a viral video throwing a sack containing a dead dog into the Marikina River.In a video uploaded on Sunday, Aug. 30, by Facebook user Angelica Nvrr Casas, the man was seen holding a sack allegedly containing the dog's body. The uploader pleaded with him not to throw it into the river, but he did so anyway.Th…