How long can a dog be left alone? (And a dog with separation anxiety?)

The short answer: for a typical adult dog, about four hours is the sensible routine limit — and much less for puppies (PDSA; RSPCA). For a dog with separation anxiety, the honest answer is different: only as long as your dog can cope right now, which is often far shorter than owners expect.

This article explains both answers, how to find your own dog’s number, and how to cover the rest of your day while you train.

The general rule: about four hours

Dogs are social animals. Even a dog who copes calmly needs toilet breaks, water, exercise and company. If your day is longer than that, the practical options are a dog walker who breaks up the day, a friend or neighbor, a sitter, or a daycare your dog genuinely enjoys.

If your dog has separation anxiety, the number is personal

Most advice says to “leave your dog for short periods and slowly build up.” It never says how short. For one dog that means twenty minutes. For another it means twenty seconds.

The expert rule is simple: keep practice absences shorter than the time it takes your dog to become upset (ASPCA). Guessing that time is one of the most common ways home training goes wrong — owners leave for too long, the dog panics, and the problem gets worse.

How to find your dog’s number

You need a phone, tablet or pet camera you can watch live from outside, and a stopwatch.

1. Go through your normal leaving routine — keys, shoes, bag.
2. Leave calmly. Close the door and start the timer.
3. Watch the live video for the first sign your dog is no longer settled.
4. At the first clear sign, note the time and go straight back in, calmly.
5. Write the number down, with the first sign you saw.
6. If your dog stays settled for 30 minutes, come back anyway and write “30+ minutes”.

What to watch for

The clearer signs of worry include ears pulled back, pacing or going back and forth to the door, panting when your dog isn’t hot, whining, barking or howling, scratching at the door, and ignoring food they’d normally love (Gähwiler et al., 2020; ASPCA). Calm looks like lying down — resting, sleeping or quietly watching — with soft ears and a relaxed body, which is what dogs without separation problems mostly do when left alone (Silbermann & Gansloßer, 2023).

While you train: don’t leave your dog longer than they can cope

This is the part most home plans skip. A lovely ten-minute session in the evening can be undone by leaving your dog alone for eight hours the next morning — every time your dog is left longer than they can cope with, they practice panicking.

That sounds impossible, but most dogs with separation anxiety are fine as long as someone is with them — it doesn’t have to be you (ASPCA). Options include taking your dog to work if allowed, a family member or neighbor at your home, a sitter or a walker who breaks up the day, or a sitter’s home or daycare your dog enjoys (ASPCA; VCA Animal Hospitals; RSPCA).

If you truly can’t avoid a long absence now and then, don’t punish yourself or your dog — imperfect practice still helps (Butler et al., 2011). Keep that day’s session easy, and if long absences are frequent, talk to your vet: this is one of the situations where medication can make a real difference while you train.

How long until my dog can be left for a normal day?

Think in weeks and months, not days. In a controlled trial, a structured behavior programme helped most dogs within 12 weeks — 56% of owners reported significant improvement and another 25% slight improvement (Blackwell et al., 2006). The steps are small by design: while the target is under a minute, each step up adds only a few seconds.