How long can a dog be left alone?

There's no single number that fits every dog. UK welfare charities advise about four hours at a time for an adult dog, and less for a young puppy. In a study of dogs filmed home alone, they spent most of the time resting whether they were left for 30 minutes, two hours or four, but they greeted their owners more intensely after two hours or more.

Below: what that study found, what the guidance says, why age and habit matter, and a routine that makes the hours you're out easier on your dog.

What happens when a dog is home alone

Researchers in Sweden filmed 12 pet dogs at home on three separate days, when their owners left for 30 minutes, 2 hours and 4 hours. None of the dogs had a history of separation problems. The team recorded behaviour throughout and measured heart rate.

While the owners were out, the dogs spent most of the time lying down and resting, and the three absences looked the same. The difference came at the door. After 2 or 4 hours away, dogs greeted their owners more intensely than after 30 minutes: more tail wagging, more physical activity and attention, more contact with the owner, and more lip licking and body shaking. The change was already there after two hours.

The authors found no behavioural evidence that the dogs' welfare was reduced, even at four hours. But they concluded that dogs are affected by how long they're alone, even if they don't show it until you come home.¹

Keep the limits in mind. It was 12 dogs, none with separation problems, and four hours was the longest absence tested. It tells us nothing about a full working day.

What welfare guidance says

The RSPCA, a UK animal welfare charity, says the right length depends on the dog, but advises leaving a dog for no longer than four hours, so they have chances to exercise, go to the toilet and spend time with people.

The PDSA, a UK veterinary charity, gives the same figure: four hours is the longest dogs should routinely be left, and every dog is different. It adds that four hours would generally be too long for a very active young puppy, but might be fine for an older dog.

Those four hours are guidance, not a legal limit or a study result. They reflect the basics every dog needs: a toilet break, exercise and company.

Why there's no single number

• Age. Young puppies need shorter absences, and the PDSA calls four hours generally too long for a very active one. Build up slowly, as in the routine below.
• Toilet needs. A chance to go to the toilet is one of the RSPCA's reasons for the four-hour advice. Puppies, older dogs and dogs with health conditions may need breaks more often. Ask your vet if you're unsure.
• Habit. A dog that has learned, step by step, that you always come back copes very differently from a dog that has never been left.
• Separation distress. Some dogs find any time alone hard. In a survey of 13,715 dogs in Finland, about 6% showed separation-related behaviour. For those dogs, the question isn't how many hours but how to make being alone feel safe, and that needs a plan with your vet.²

Signs being alone is hard for your dog

The Merck Veterinary Manual lists the signs of separation distress: destructive behaviour, especially at doors and exits or aimed at the owner's things; distress vocalizing, such as barking or whining; toilet accidents; drooling; pacing and restlessness; not eating; and repetitive behaviours. They usually start within the first 15 to 30 minutes after you leave.

You can't see those minutes, so film them. A phone or pet camera for your first few absences will show you whether your dog settles or struggles. If you see these signs, talk to your vet. Separation distress needs a proper plan, not just a longer walk or a new toy.

A routine for the hours you're out

1. Exercise first. A walk or a game before you go uses up energy, and the PDSA calls daily exercise vital for dogs' physical and mental wellbeing.
2. A toilet break right before you leave.
3. Leave calmly. The PDSA advises leaving calmly and not getting your dog excited before you go. Skip the long goodbye.
4. Leave something to do. The PDSA suggests food puzzles, feeder toys like a stuffed Kong, brain games and chews to prevent boredom. Pick things that are safe to leave unsupervised. See separation anxiety toys that help.
5. A calm soundtrack. Soft classical music is where the research points, with modest results (more below).
6. Break up long days. If you'll be gone longer than your dog can manage, Merck suggests a dog sitter or day care. A midday visit from a dog walker or neighbour breaks up the day too.
7. Build up gradually. The RSPCA's method: teach your dog to stay on their bed while you're in the room, then as you step away, then as you leave the room, then with the door shut, rewarding calm each time. Lengthen the absences slowly.³⁴

Does leaving music on help?

It may help a little. When pet dogs were left without their owners in an unfamiliar room, those that heard classical music lay down and settled sooner than dogs with no added sound. The researchers called it only a moderately calming effect. An audiobook showed no apparent benefit.⁵

In shelters, classical music has been linked to dogs resting more and barking less, though kennels are noisier and more stressful than most homes.⁶

So music is a comfort, not a treatment. It won't make eight hours feel like four, and it won't fix separation distress. For which genres were tested and why variety matters, see classical music for dogs. For the whole body of research, see what the shelter and kennel studies found.

If you're deciding between the two, see music or the TV: which to leave on.

Calm when you leave

If you want music to be part of your leaving routine, the Barkwoo Music Box makes it one button. It clips onto any standard collar and plays hours of preloaded music, with no phone, WiFi or app, and runs for almost a full day on one charge. Because the music is on the collar, it stays with your dog wherever they settle. Make it one step of the routine above, and play it at calm times when you're home too, not just when you go out.

You can listen to the home-alone playlist first. The studies above used speakers, not our device, and none tested dogs with separation anxiety, so we don't claim more for it than they found.

Quick answers

How long can an adult dog be left alone? UK welfare charities RSPCA and PDSA advise no more than about four hours at a time. Individual dogs vary.

How long can a puppy be left alone? Less than an adult. The PDSA says four hours would generally be too long for a very active young puppy. Start with minutes and build up slowly.

Can I leave my dog alone for 8 hours? Welfare guidance puts the limit at about four hours, and the home-alone study above stopped at four. On long days, arrange a midday walk, a sitter or day care.

Is my dog stressed when I'm out? In one study, dogs spent most of their time alone resting, for up to four hours, but greeted their owners more intensely after longer absences. Film your dog to see how they cope. Signs like barking, destruction or accidents soon after you leave are worth raising with your vet.

Should I leave music on for my dog? It may help your dog settle a little. The effect in pet dogs left without their owners was moderate.

References

1. Rehn, T. & Keeling, L.J. (2011). The effect of time left alone at home on dog welfare. Applied Animal Behaviour Science, 129(2–4), 129–135. doi:10.1016/j.applanim.2010.11.015 ↩︎
2. Salonen, M., Sulkama, S., Mikkola, S., et al. (2020). Prevalence, comorbidity, and breed differences in canine anxiety in 13,700 Finnish pet dogs. Scientific Reports, 10, 2962. doi:10.1038/s41598-020-59837-z ↩︎
3. PDSA. Home alone: preventing separation anxiety. pdsa.org.uk ↩︎
4. Borns-Weil, S. (2025). Behavior problems of dogs. Merck Veterinary Manual. merckvetmanual.com ↩︎
5. Kinnaird, R.F. & Wells, D.L. (2022). The effect of auditory stimulation on pet dogs' reactions to owner separation. Applied Animal Behaviour Science, 254, 105688. doi:10.1016/j.applanim.2022.105688 ↩︎
6. Wells, D.L., Graham, L. & Hepper, P.G. (2002). The influence of auditory stimulation on the behaviour of dogs housed in a rescue shelter. Animal Welfare, 11, 385–393. doi:10.1017/S0962728600025112 ↩︎
7. RSPCA. Training your dog to be left alone. rspca.org.uk