Senior Dogs

My Dog Started Pacing at Night. Here's What Was Happening.

By Sarah Chen · 4 min read · November 26, 2025

It started on a Thursday night. I woke at 2 a.m. to the sound of Bowie's nails clicking on the hardwood floor. Click, click, click, pause. Click, click, click, pause. He was pacing a loop from the bedroom to the living room and back, over and over, like a sentry on patrol.

I called him back to bed. He came, lay down for ten minutes, then got up and started pacing again. The next night, the same thing. And the next. Within a week, I was averaging four hours of sleep and Bowie seemed exhausted during the day.

I assumed it was a bathroom issue. I started taking him out right before bed. The pacing continued. I wondered if he was in pain. I checked his body for tender spots. Nothing obvious. I wondered if he was anxious about something. Nothing in our environment had changed.

Then I searched "senior dog pacing at night" and found myself reading about canine cognitive dysfunction.

The Wellness Check That Clarified Everything

I brought Bowie to our care provider within days of the pacing starting, armed with videos I'd taken at 3 a.m. my care provider watched the videos, did a thorough physical exam, ran bloodwork (all normal), checked his blood pressure (normal), and performed a neurological assessment.

Then she asked me a series of questions I wasn't expecting:

Each answer on its own seemed minor. Together, they formed a pattern. my care provider explained that nighttime pacing, especially combined with other subtle cognitive changes, is one of the hallmark presentations of canine cognitive dysfunction.

Understanding Sundowning

The nighttime pacing, my care provider explained, is related to a phenomenon called "sundowning," which also occurs in humans with Alzheimer's disease. As evening approaches and light levels change, dogs with cognitive dysfunction experience increased confusion, anxiety, and restlessness. The circadian rhythm, which regulates sleep/wake cycles, becomes disrupted as the brain's internal clock loses its calibration.

Bowie wasn't pacing because he needed to pee, or because he was in pain, or because he heard something outside. He was pacing because his brain was confused about whether it was time to be awake or asleep, and the confusion manifested as repetitive, purposeless movement.

What We Did About It

Medication

my care provider prescribed selegiline (Anipryl), which supports dopamine levels in the brain. She was honest that it helps some dogs significantly and others not much at all. For Bowie, the effect was moderate but real: the pacing episodes became less frequent and less prolonged over the course of about a month.

Environmental changes

We added nightlights along Bowie's pacing route so he wasn't navigating in the dark. I moved his water bowl closer to the bedroom so he didn't have far to go if he was thirsty. I put carpet runners on his walking path to reduce the clicking noise (for both our sakes).

Daytime enrichment

my care provider emphasized that keeping Bowie's brain active during the day could help reduce nighttime restlessness. I increased his daytime mental stimulation: more puzzle feeders, more scent games, more short training sessions. The goal was a brain that was healthily tired by evening.

Evening routine

I developed a calming evening routine: a gentle short walk at dusk, a warm meal, quiet time with soft music, and then bed at the same time every night. The predictability seemed to help anchor his sense of when the day was ending.

Nutritional support

I was already giving Bowie LongTails (which contains NR for cellular and brain health support), and my care provider encouraged me to continue. She also suggested adding a fish oil supplement for additional omega 3 support, which has been associated with reduced neuroinflammation.

Where We Are Now

The pacing hasn't disappeared entirely. Bowie still has restless nights, maybe two or three per week. But the frequency and duration have improved. The combination of medication, environmental changes, and daytime enrichment has made the nights manageable for both of us.

More importantly, understanding what was happening removed the fear. The first week of pacing terrified me because I didn't know what was wrong. Once I had a diagnosis and a plan, the fear transformed into something more manageable: a challenge to address, not a mystery to dread.

If Your Dog Is Pacing at Night

Please don't wait as long as I considered waiting. Nighttime restlessness in a senior dog warrants a wellness check. The causes can range from treatable conditions (urinary tract infection, pain, metabolic disease) to manageable ones (cognitive dysfunction). a qualified professional can help differentiate and create an appropriate plan.

And in the meantime, try not to lose patience. Your dog isn't pacing to annoy you. They're confused, and they need your compassion more than ever.

Key Takeaways

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Sarah Chen

Health and science editor at Grey Muzzle Mag. Lives in Portland with Bowie, her 9-year-old Golden Retriever who still thinks he can catch squirrels.