Senior dogs
Why does my senior dog sleep so much more now?
Last updated 23 September 2026 · How we write and check this
Short answer
Increased sleep, often 16 to 18 hours a day compared with 12 to 14 as a younger adult, is one of the most consistent and genuinely expected changes seen in senior dogs, reflecting lower activity levels and a naturally slower metabolism overall. This is generally normal rather than concerning on its own, though a sudden, dramatic increase paired with reduced appetite or reluctance to move at all is definitely worth a vet visit.
Why sleep needs genuinely increase with age
Lower daily activity means less physical need to stay alert and awake throughout the day, and metabolism naturally slows as well, both of which contribute to a senior dog resting considerably more than it did as a younger, more active adult. This gradual increase, often creeping up by an extra hour or two over several years, tends to happen so slowly that owners sometimes only notice it clearly in hindsight, looking back at old photos or memories.
What a normal increase looks like
A senior dog sleeping 16 to 18 hours a day, broken into multiple shorter naps rather than one continuous block, while still waking readily for meals, walks, and attention, is showing a typical, expected pattern for its age. The quality of wakefulness matters just as much as the raw quantity of sleep, since a dog that is alert and engaged during its awake hours is different from one that seems groggy or unresponsive even when technically awake.
When increased sleep is worth a vet visit
A sudden, sharp increase in sleep over just a week or two, rather than a gradual shift over months, or sleep paired with reduced interest in food, reluctance to get up even for favorite activities, or general unresponsiveness, is different from ordinary aging and deserves proper veterinary attention rather than being assumed to be routine tiredness.
Key takeaways
- Senior dogs commonly sleep 16 to 18 hours daily, up from 12 to 14 hours as younger adults.
- This increase usually happens gradually over years, reflecting lower activity and a slower metabolism.
- A dog that wakes readily and alertly for meals and walks is showing a typical, healthy pattern.
- A sudden sharp increase in sleep, or sleep paired with reduced appetite, warrants a vet visit.