There’s a strong link between diet and behaviour.

As humans, we recognise that our emotions and moods affect our behaviour. Thanks to science, we recognise that these are influenced by experience and the balance of key neurotransmitters in our brains. When it comes to a dog’s behaviour, the exact same science applies. Clinical studies show that in healthy dogs balanced neurotransmitters enable them to think clearly and to be receptive to learning and training.

One of the most important neurotransmitters involved is serotonin, as this can help to control mood and sleep and has been shown to influence behaviours related to anxiety, stress and fear in the dog. L-Tryptophan, provided in Breakthrough StartUp, is a serotonin precursor.

Breakthrough StartUp dog food is clinically proven to help maintain and support learning ability and social interaction alongside appropriate behavioural therapy.


Just like us, dogs can often feel the stresses and strains of modern life. Stress can lead to an unhappy dog too and cause poor and problematic behaviour as he tries to cope. Observing your dog closely and spotting the signs of stress is the first step to improving his life and your relationship.


Feed breakthrough as recommended (see feeding guide) and watch out for positive emotional changes over a matter of weeks.
Delicious and nutritious - breakthrough for a happier, more focused dog. Don't forget our Money Back Guarantee if your dog refuses to eat breakthrough!


Now that you're feeding breakthrough, track improvements with our Progress Chart. Build on the improvements and begin your journey of training! breakthrough manages behaviour without changing your dog's personality. Guide your dog's behaviour positively to bring further happiness and peace for all the family.