Slipping Into Darkness (1988)
This film is definitely for teenagers. A dog, which belonged to the director, is periodically seen throughout the picture. In the film the dog belongs to a retarded boy who gets intoxicated and is hit by a train. His brother and two friends try to take revenge against the girls who they think are responsible for getting him drunk before the train accident.
In the film the dog gets hit by a car. This scene was done in cuts. Also in the film, a frog, toad and a snake are seen in a lab.