'Psychiatric service' pooches respond to PTSD sufferers' needs
                                
                                
                                    (Newser) -
                                    The golden retriever nuzzles his master as though he wants a treat, trots into the kitchen, and waits patiently. His master walks over and, under the pet’s watchful gaze, takes a series of pills. The dog wags his tail with approval. He is a psychiatric-service dog, part of a...