Why does my senior dog pace at night instead of sleeping?

A dog with stiff or aching joints may struggle to find a genuinely comfortable resting position, shifting and repositioning repeatedly before finally settling down properly for the night, or getting up to pace and try again after failing to get comfortable the first time around. This is often more noticeable at night simply because there are fewer other activities competing for attention, making the restlessness far more obvious to an owner lying awake nearby in bed.

Sleep architecture, the specific pattern and depth of different sleep stages through the night, can shift with age in dogs much as it also does in older humans, sometimes leading to lighter, more easily interrupted sleep and considerably more frequent brief wakings overnight throughout the hours of darkness. A dog waking more often may pace briefly before resettling each time, which can look like significant restlessness even though each individual waking is actually fairly short.

Occasional pacing, particularly if it resolves once your dog finds a comfortable spot or after a quick late bathroom trip outside, is not usually a major concern in itself. Frequent, prolonged pacing that does not resolve with comfort adjustments, especially alongside signs like seeming genuinely lost in familiar rooms or staring blankly at walls, points toward something worth discussing properly with your vet rather than simply a comfort issue alone.