An estimated 28% of dogs aged 11 to 12 and 68% of those aged 15 to 16 are affected by canine dementia, or cognitive dysfunction syndrome (CDS), says Matt Spiegle, D.V.M., director of veterinary programs at Vetster. Common symptoms include confusion or dis-orientation, decreased activity, sleep changes, and forgetting long-established training. If you notice any of these, see your vet for treatment options. While there is no cure, early detection can improve your pooch’s quality of life and slow the disease’s progression. Treatments can include diet and exercise changes, supplements, or medication. Dogs with CDS are also very dependent on routine, so keeping them on a schedule can help make your last years together happy.…