As dogs grow older, their hair color fades, their muzzles get gray, their eyes cloud up, they sleep more often and more deeply, they move more slowly and stiffly, and they become less adaptable to change. Some dogs get lumpy and bumpy with fatty tumors or warts popping up. They do not hear as well, and they have more dental problems. They are prone to weight changes, are easily startled, and may be less tolerant of children. Some lose their mental acuity, becoming confused and disoriented. It's a bittersweet time when they also grow more dependent upon their owners. Now more than ever, your dog will need all the love and support you can give.