At 49:26 in, some jerk walks onto a retired cop’s beat-up houseboat and shoots the retired cop and his poor little dog. The little angel is shot off screen, but we hear the shot and the dying yelp.
The blonde whore in this movie has a history of cutting. She explains this to the detective (a fat Tom Berenger) and later in the movie, as he's sitting in a tub soaking, he also cuts himself three times with a straight-edge razor.