Dead Dog (2001)

Tom and Perri are the happy ideal New York couple until Tom's beloved Golden Retriever is killed by a hit-and-run driver. Tom blames Perri for the accident and their relationship becomes strained as Tom's fixation with finding and punishing the culprit consumes his life. Perri can't understand Tom's thirst for vengeance and she grows distant from him. When Tom disappears, she falls into an affair with her scheming colleague. Events spin out of control as death, sex and cynicism take their toll on Tom and Perri's seemingly idyllic life. But why should infidelity, hypocrisy and murder ruin a perfectly good relationship?

Unfortunately the movie Dead Dog is not yet available on HBO Max.