Assemble a mood board with a 'Dog park' concept. In it, the first image portrays a vibrant green open space filled with diverse breeds of dogs playing fetch, some are middle-aged Caucasian females, others are young Hispanic males. The second image depicts a group of black children with their puppies near a wooden bench, having a picnic under a large oak tree. The third image highlights the close-ups of dog leashes, colourful toys, and water bowls scattered around the park. The final image projects a breathtaking sunset over the park with shadows of dogs and their South Asian owners silhouetted against the radiant sky. The overall mood delivers a sense of community, relaxation, and joy culminating the essence of a 'Dog park'.