All dogs should have some training so that they can have the freedom they need to be able to be let off the lead where it is safe to do so, and so they are not a nuisance or danger to themselves or others. How you train your dog – and how you relate to them day-to-day – will have an impact on their mood.Reward-based training methods and handling improve the bond between a dog and their owner – but heavy-handed methods that rely on punishment can leave the dog feeling unable to succeed, result in a loss of confidence in their owner, and produce a state of learned helplessness which looks a lot like a dog being quiet and well-behaved but is actually an indicator of a very low mood state and chronic stress where it is far safer to do nothing.