Michael was chased and assaulted by an aggressive dog when he was 3 years old. As an adult he gets little butterflies in his stomach when he hears a dog bark even if its far away, and he claims that dogs make him very nervous. Identify the following in this example: UCS (Unconditioned Stimulus) UCR (Unconditioned Response) NS (Neutral Stimulus) CS (Conditioned Stimulus) CR (Conditioned Response)