How Long Can a Dog Be Left Alone?

Short answer

There's no single safe number for every adult dog. How long a dog can comfortably stay alone depends on their toilet needs, age, health and prior training, and on whether they actually settle while you're away.

As planning guidance, UK welfare charities advise not leaving dogs alone for more than about four hours routinely, so they get chances to go to the toilet, exercise and spend time with people (RSPCA, PDSA, Dogs Trust). US veterinary clinic articles often give a range of around four to six hours for a healthy adult (example). Treat these as planning ranges, not guaranteed limits.

This guide is about adult dogs. For a puppy, see how long a puppy can be left alone.

Quick guide by situation

Can a dog be left alone for 8 hours?

Not as a routine plan for most dogs. Eight hours is twice the UK welfare guidance, and a working day plus commute is often longer. Some adult dogs manage an occasional long day, but managing isn't the same as being comfortable. Whether a long day works for your dog depends on:

• Toilet needs: whether they can comfortably wait that long every day, not just once.
• Whether they settle: a dog who sleeps most of the day is in a different position from one who paces or barks for hours. Only a recording tells you which.
• Exercise before and after: a walk and a toilet break before you leave, and real time together when you're back.
• Water: fresh water available the whole time.
• A midday break: a visit from a walker, neighbour or family member splits the day into two shorter stretches.
• Age and health: older dogs and dogs with some medical conditions may need to go out more often.
• How it was built up: a dog who has practised gradually copes better than one who goes straight from company all day to a full workday.

If most of your days are this long, plan regular midday cover rather than waiting to see whether your dog adapts.

What actually decides the answer

• Toilet needs, which vary from dog to dog and change with age and health.
• Health and medication, including conditions and medicines that increase thirst and urination.
• Practice: how much time alone your dog has already built up calmly.
• Recent changes: a new home, a move, or a sudden change in your hours.
• The setup: where they're left, what they can see and hear, and whether they have water and something to do.

Changes in routine matter more than many owners expect. In a UK study that followed 1,807 dogs through the pandemic, dogs whose time alone fell most during lockdown were more likely to show new signs of separation-related behaviour once restrictions eased (Harvey et al., 2022). It was an owner survey that shows an association, not proof of cause, but it's a good reason to rebuild alone time gradually after a long stretch at home rather than jumping straight back to full days.

Toilet breaks

Take your dog out right before you leave and as soon as you're back. How long they can comfortably wait in between varies, and sources don't agree on one bladder figure for adult dogs, so go by your own dog:

• Accidents while you're out in a house-trained dog mean the gap is too long, or something medical has changed.
• Rushing out to go the moment you get home suggests they've been waiting a while.
• Drinking or urinating more than usual is a reason to see your vet, not just to add breaks (VCA).

Physically coping vs being comfortable

These are two different questions:

• Can your dog physically manage it? No accidents, water available, a safe space.
• Is your dog relaxed? Resting or asleep for most of the time, rather than pacing, vocalising or watching the door.

A dog can pass the first and still fail the second. Coming home to a dry floor and no damage doesn't prove your dog was comfortable: the RSPCA says many dogs find being left alone hard, and around half of them show no obvious signs (RSPCA).

How to tell whether your dog is coping

Record the first 20 to 30 minutes of an ordinary absence, and check again from time to time as absences get longer. Signs of separation distress usually appear within that first window (Merck Veterinary Manual), and the RSPCA recommends videoing your dog when they're left (RSPCA).

Usually coping

• Settles within a few minutes, lies down and rests or sleeps.
• May check the door or window briefly, then goes back to resting.
• Eats a chew or food toy you've left.
• Greets you normally when you get back.

Too long, or too hard for now

• Barking, howling or whining that keeps going or builds.
• Pacing, panting or not settling at all.
• Scratching or chewing at doors, windows or the crate, or trying to get out.
• Ignoring food they'd normally eat.
• Toilet accidents in a house-trained dog.
• Drooling, trembling or frantic greetings when you return.

One sign on its own, like a few barks when a delivery arrives, doesn't mean separation anxiety. The pattern matters: does it start soon after you leave, and does it build or fade? Why Some Dogs Struggle Alone helps you read it.

Setting up the space

• A familiar, comfortable resting spot at a sensible temperature, with hazards and anything chewable removed (PDSA).
• Only as much space as your dog handles calmly. Extra room can mean more pacing for a dog who hasn't learned to settle.
• A crate only if they're already relaxed in it for that length of time. A long day shut in a crate isn't a substitute for a break (example).
• Fewer triggers: a quieter room or closed curtains if passers-by or outside noise set your dog off.

Setting Up a Safe Space for Time Alone covers crates, gated rooms and beds in more detail.

Food, water and something to do

• Water: always available while you're out (Dogs Trust).
• Before you leave: exercise and a toilet break. The RSPCA suggests getting back from exercise about half an hour before you go, and a small meal shortly before leaving (RSPCA).
• Something to do: a food toy or long-lasting chew your dog already uses safely while supervised. Count the food in the day's total.
• Meals on workdays: the dog feeding schedule shows how two meals fit around a working day.

Workday options

If your normal day is longer than your dog can comfortably manage, add cover rather than stretching your dog:

• A midday visit from family, a neighbour or a friend.
• A dog walker or pet sitter who comes to your home (PDSA).
• Daycare, for dogs who enjoy other dogs and are up to date with vaccinations (PDSA). It doesn't suit every dog.
• Home days or adjusted hours on some days of the week.
• Coming home at lunch, if you live close enough.

When a midday break is needed

Arrange a break or visit if:

• Your absences are regularly longer than about four hours.
• Your dog has accidents, or needs to go out straight away when you get back.
• The recording shows them settling less as the day goes on.
• They're older, or have a condition or medicine that increases their toilet needs.
• They've recently joined your family, or have just had a long stretch with someone home all day.

Senior dogs

There's no age at which a dog suddenly needs less time alone, so plan around the dog in front of you. Older dogs are more likely to develop changes that affect it:

• Toilet needs. Urinary incontinence is most common in middle-aged to senior, medium to large female dogs, and often shows as wet patches where they've been lying (VCA). Conditions such as kidney disease, diabetes and Cushing's disease can increase thirst and urination (VCA).
• Cognitive changes. Cognitive dysfunction can bring a disrupted sleep–wake cycle, house soiling, more anxiety and changes in activity (Merck Veterinary Manual).
• Pain and sensory decline, such as hearing or sight loss, can contribute to house soiling and behaviour changes (Merck Veterinary Manual).

New accidents, new restlessness or new distress when alone in an older dog is a reason to see your vet before changing the training. In the meantime, shorter absences and more frequent toilet opportunities are a sensible accommodation.

Health and medication

Some conditions and medicines make dogs drink and urinate more, including kidney disease, diabetes and Cushing's disease, and drugs such as corticosteroids, diuretics and some anti-seizure medicines (VCA). A dog on these may need shorter absences or more breaks, and some medicines have to be given at set times. Ask your vet how long your dog can comfortably go, and plan the day around that.

When to talk to a vet or behaviour professional

Talk to your vet first, especially if something has changed, and to a qualified behaviour professional if:

• Your dog can't settle even during short absences, or distress is getting worse.
• They try to escape, or injure themselves on doors, crates or windows.
• They stop eating when left.
• A house-trained dog starts having accidents.
• They're drinking or urinating more than usual.
• An older dog is newly restless at night, confused or anxious.

Barking while you're out isn't enough to call it separation anxiety. Distress that starts soon after you leave, often centred on the exits, is the pattern to take seriously (Merck Veterinary Manual).

Building comfort with time alone

This page is about how long. Teaching your dog to be comfortable alone is a separate job, built from absences short enough that they stay calm. Building Alone Time takes it step by step from seconds, Calm Departures and Arrivals covers leaving and coming home, and When Your Dog Destroys Things While You're Gone helps if you're coming home to damage.