Veterinarians report rise in canine dementia as dogs live longer

An increasing number of older dogs in Denmark are being diagnosed with dementia, a condition long feared in humans but often overlooked in pets, reports DR.

Bobby, an 11-year-old yellow Labrador, began exhibiting sudden behavioral changes—hiding behind a hedge in his own garden, failing to recognize his owners, and refusing to come when called. His owner, Pernille Pedersen, initially feared the worst. “He stood in the garden like he’d never been there before,” she said. “We couldn’t call him to us—it was as if he didn’t know us.”

After ruling out physical illness, veterinarians at Odder Animal Clinic diagnosed Bobby with canine dementia, a condition typically seen in dogs over eight years old. Vibeke Steinmüller, a veterinary nurse specializing in animal behavior, explained that symptoms include disorientation, altered sleep patterns, and changes in interaction with family members.

“Many owners are skeptical when we say their dog has dementia,” Steinmüller said. “But when all physical causes are ruled out and the behavior matches the criteria, it’s dementia.”

While exact numbers are unknown, studies suggest 15–20% of dogs over eight may be affected, rising to about 50% in those over 14. Odder Animal Clinic now diagnoses between 10 and 30 cases annually—a growing trend as dogs live longer and awareness increases.

Bobby’s treatment included natural supplements to slow the disease’s progression. Within two weeks, Pedersen noticed improvement. “He’s back to his usual self,” she said. “It’s given us more time together.”