When Your Dog Sleeps More Than Usual

When your dog sleeps more than usual, it can mean something as simple as recovery from activity or something else like an early illness. The difference often comes down to what else is happening around the sleep.

I have stood in more than one doorway watching a dog sleep in the middle of the day and trying to work out whether this was normal tired or something worth worrying about. The trouble is that dogs sleep a lot anyway. More than most people realise. So the line between enough and too much is not always obvious until you step back and look at the pattern rather than the single nap.

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How Much Sleep Is Normal

Adult dogs sleep between twelve and fourteen hours a day on average. Puppies and older dogs sleep more, often sixteen hours or beyond. That includes proper sleep and the lighter dozing they do throughout the day when nothing much is happening.

If you are home all day, it can look like your dog does nothing but sleep. And in a sense, that is accurate. Dogs are built to rest when there is no reason to be awake. They do not fight it the way people do. They just lie down.

The issue is not whether your dog sleeps a lot. It is whether the amount has increased noticeably without an obvious reason. If your seven-year-old has always napped through the afternoon and still does, that is normal. If they have started sleeping through the morning as well and barely lifting their head when you move around the house, that is a change worth noting.

Why Dogs Sleep More

There are dozens of reasons a dog might sleep more than they used to. Some are harmless. Some are not. These are the most common.

Age: Older dogs tire more easily and sleep longer. This happens gradually as they move past middle age, and it is one of the clearest signs of ageing. The Dog Years to Human Years Calculator gives a better sense of where your dog sits in terms of life stage than guessing based on calendar age alone.
Activity level: A dog that has had a long walk, a hard play session, or a day out will sleep more afterwards. This is recovery, and it is normal. The sleep should return to usual patterns within a day or so.
Boredom: Dogs that are not mentally or physically engaged will sleep out of habit rather than need. It is not harmful on its own, but it often sits alongside weight gain and low mood.
Pain: Joint pain, muscle soreness, or discomfort from an injury often leads to longer rest periods. The dog is not always limping or showing clear signs. Sometimes they just stop moving as much and sleep instead.
Illness: Infections, digestive problems, heart issues, kidney disease, diabetes, and other systemic conditions frequently cause increased sleep. This usually comes with other symptoms, but not always early on.
Medication: Painkillers, anti-anxiety medication, antihistamines, and some antibiotics can make a dog drowsy. If the extra sleep started after a new prescription, that is likely the reason.

When Extra Sleep Is a Problem

The sleep itself is rarely the problem. It is what the sleep is covering up. A dog that sleeps more because they are in pain is not resting well. A dog that sleeps more because they are unwell is not going to improve without treatment.

These are the signs that extra sleep is something to take seriously rather than wait out.

Sudden increase: If the change happened over a few days rather than gradually, something has changed. It could be illness, injury, or the early stages of a condition that has not shown other symptoms yet.
Difficulty waking: A dog that is slow to wake, groggy, or reluctant to get up even for food or a walk is not just tired. That level of lethargy suggests something deeper.
Loss of interest: If your dog is sleeping instead of doing the things they usually enjoy, that is significant. A dog that ignores their favourite toy, does not react to the lead, or skips meals in favour of sleep is unwell.
Physical symptoms: Limping, stiffness, weight loss, vomiting, diarrhoea, coughing, or changes in drinking habits alongside increased sleep mean a vet visit is needed.
Restless sleep: A dog that is sleeping more but also waking frequently, shifting position constantly, or panting during rest is not comfortable. Pain and respiratory issues both cause this pattern.

What to Watch For

I have found it useful to track a few things over a week rather than react to a single day. Dogs have off days the same way people do. One quiet afternoon does not mean much. A full week of longer naps and less energy means something has changed.

Watch appetite first. If your dog is eating normally and maintaining weight, the extra sleep is less concerning than if they are also leaving food or losing condition. Appetite is one of the most reliable indicators of whether a dog is coping or struggling.

Watch movement. A dog that is stiff when they get up, reluctant to jump, or moving more slowly than usual is likely dealing with joint pain or muscle soreness. Pain does not always look dramatic. Sometimes it just looks like tiredness.

Watch mood. A dog that still greets you, reacts to sounds, and engages when you offer interaction is probably fine. A dog that barely lifts their head or does not respond to things that usually interest them is not.

What to Do

If the extra sleep is paired with any of the warning signs above, book a vet appointment. Do not wait to see if it improves on its own. Early intervention makes a difference, particularly with conditions like infections, diabetes, or kidney disease where symptoms can be vague at first.

If there are no other symptoms and the increase has been gradual, consider whether your dog is getting enough stimulation. Older dogs still need mental engagement and gentle physical activity. Boredom sleep is real, and it is fixable without medical intervention.

If your dog has recently started a new medication, check the information sheet or contact your vet to confirm whether drowsiness is a known side effect. Some medications cause temporary tiredness that settles after a few days. Others do not, and the dose may need adjusting.

Older Dogs and Sleep

Older dogs sleep more. That is expected. But the increase should be steady, and the sleep should still look restful. An older dog that suddenly goes from fourteen hours to eighteen hours of sleep a day without a clear reason deserves a check.

Pain is vastly underdiagnosed in older dogs because the signs are subtle and easy to dismiss as normal ageing. Joint pain in particular often shows up as increased sleep and reduced interest in activity before it shows up as limping. If your older dog is sleeping more and also slower to get up, reluctant to go on walks, or stiff after rest, pain is likely involved.

Cognitive decline also affects sleep patterns. Some dogs with cognitive dysfunction sleep more during the day and wake more at night. Others just seem disoriented or less responsive overall. If your older dog is sleeping more and also seems confused, anxious, or less engaged with their surroundings, speak to your vet about cognitive support options.

When to Relax

Some extra sleep is nothing. A long walk, a day with visitors, a change in routine, or even a shift in the weather can all lead to a dog sleeping more for a day or two. If your dog is otherwise bright, eating well, and happy to engage when you offer it, the sleep is probably just recovery.

Young dogs and puppies go through growth phases where they sleep more for a few weeks and then level out again. This is normal and does not need intervention unless other symptoms appear.

If you have recently increased your dog’s exercise or introduced new activities, more sleep is expected. The body adapts, and sleep is part of that. As long as your dog is not limping, losing weight, or showing signs of exhaustion rather than healthy tiredness, the extra rest is appropriate.

What It Comes Down To

The sleep itself is not the thing to worry about. It is what the sleep is telling you. A dog that is sleeping more because they are content, well-exercised, and ageing gently is fine. A dog that is sleeping more because they are unwell, in pain, or struggling with something they cannot communicate is not.

You know what normal looks like for your dog. If the sleep has changed and you cannot explain why, trust that instinct and get it checked. Better to be told everything is fine than to wait while something fixable gets worse.

This article is for informational purposes only. For advice specific to your dog always speak to your vet.