The geriatric dog population is growing as veterinary care improves and dogs live longer. Dogs are typically considered senior from 7-8 years (earlier in large breeds) and geriatric from 10-12 years. Maximising quality of life through the senior years requires understanding age-related changes and proactive management.
Ageing brings multiple organ system changes: reduced kidney and liver function affecting drug metabolism; declining cardiac reserve; intestinal changes affecting nutrient absorption; reduced immune competence; hormonal changes; sensory decline (vision, hearing); and musculoskeletal degeneration. These changes are gradual, often subclinical initially, and cumulatively impact quality of life if unmanaged.
CDS (canine dementia) affects up to 28% of dogs aged 11-12 years. Signs include disorientation, sleep-wake cycle disruption, altered interactions, house soiling, and anxiety. Pathological changes resembling human Alzheimer's disease are found at post-mortem. Early intervention with environmental enrichment, cognitive stimulation, dietary antioxidants (SAMe, omega-3 fatty acids), and medications (selegiline) slows progression and maintains welfare.
Osteoarthritis affects the majority of geriatric dogs and is chronically underdiagnosed. Subtle signs—reduced play, reluctance to climb stairs, changed sleeping positions, reduced greeting behaviour—are often attributed to "slowing down" rather than pain. Validated chronic pain assessment tools (Liverpool Osteoarthritis in Dogs, LOAD scale) enable systematic pain monitoring. Multimodal analgesia combining NSAIDs, gabapentin, physiotherapy, and weight management dramatically improves welfare.
Senior dog nutrition requires adjustment: reduced caloric density to prevent obesity (which worsens joint pain and metabolic disease); maintained high-quality protein to prevent muscle wasting (sarcopenia); adjusted phosphorus levels if kidney function declines; and joint-supporting supplements (glucosamine, chondroitin, omega-3 fatty acids). Regular bodyweight and body condition monitoring guides dietary adjustments.
Six-monthly veterinary health checks enable early detection of age-related conditions. Senior health profiles including bloodwork (biochemistry, haematology, thyroid), urinalysis, and blood pressure monitoring identify subclinical disease before clinical signs develop. Early intervention improves outcomes across virtually all age-related conditions. Dental health remains important—periodontal disease causes chronic pain and systemic inflammation in elderly dogs.
Home adaptations maximise elderly dog comfort: orthopaedic memory foam bedding; ramps or steps to reduce joint loading getting onto furniture; non-slip flooring to prevent falls; accessible food and water bowls at appropriate height; baby gates to prevent stair accidents in dogs with cognitive or mobility issues. Maintaining predictable routines reduces anxiety in dogs with CDS.
Regular structured quality of life assessment using validated tools (HHHHHMM scale, or similar) enables tracking of good days versus bad days. When quality of life declines despite optimal management, euthanasia as a final welfare intervention prevents prolonged suffering. Anticipatory conversations about end-of-life plans, before crisis occurs, enable considered decision-making rather than reactive emergency choices.