 In this study, researchers examined the effects of a polyphenol-rich extract from grapes and blueberries, PEGB, on oxidative status and cognitive performance in aging dogs. They found that dogs-fed PEGB had increased levels of antioxidant enzyme activity and gene expression related to oxidative stress. Additionally, they observed improved working memory in dogs-fed PEGB compared to those not given the supplement. These findings suggest that PEGB may have beneficial effects on cognitive function in aging dogs. Further studies are needed to confirm these findings and determine the optimal dose of PEGB for improving cognitive performance in older dogs. This article was authored by V. Fragua, La Poudre, V. Lyrie, and others.