Adult training tips. Training adult dogs is no less rewarding than teaching puppies; in fact, because they are capable of learning more complex and connected behaviors, it can be more rewarding. An adult can be taught a series of actions required to bring a can of beverage from the fridge, for example. Continue to be patient and use the most effective means of rewarding. Adult dogs can handle longer training sessions, but will still need to blow off steam with a bit of play time. Old dogs can very much learn new tricks, and mental stimulation is important for dogs of all ages. Challenge your adult dog, making it a rewarding and bonding experience.