Training a dog usually takes a long time and a lot of patience and cooperation. Without trained dogs, some jobs would be much more difficult to do. People who work with dogs must also be trained. People and dogs sometimes wear special clothes or equipment when they work. Working dogs and their handlers must obey certain rules and follow certain procedures in their working environments.
Dogs can work in different environments, eg indoor, outdoor, rural, city or suburban.
Dogs and people have some common characteristics. Before viewing the program Find out how many students have a dog at home. Talk about what dogs like to do. List some things that dogs are good at doing, eg sniffing for a bone, digging, running, barking, etc. Explain that they are about to see a TV program that shows how some dogs can be trained to work for people, because of their special abilities.