BLUEBERRIES: 

Blueberries are low in calories and contain fiber, vitamins, minerals, and antioxidants. These nutrients can support your dog's overall health, including their immune system. 

The fiber in blueberries can support healthy digestion and feed the healthy bacteria in your dog's gut. Antioxidants in blueberries can reduce the effects of brain aging. 

OATS contain:

Vitamin B to helps maintain a healthy coat 

Linoleic acid, which is an omega-6 fatty acid that helps maintain the strength of a dog's skin, also iron, zinc, and other minerals. Oats support a dog's coat. They have Soluble Fiber that promotes digestion and weight management as well as Vitamins E, K, B6, and B9, also known as folate.