Dogs can also produce endorphins, and a vigorous game of tug is enough for many dogs to produce those endorphins. Take time to engage with your dog daily, by tugging with a favorite tug, and their brain will create a feeling of happiness. No wonder tugging is a favorite game for our dogs! If your dog is not interested in toys, try a furry toy or toy with a treat pocket to attract your dog. When he/she shows interest, enthusiastically praise them.