Quick answer
Only as long as your dog stays relaxed. For a dog with true separation anxiety, that can be a few seconds or minutes at first, not hours. The usual "four to six hours" rule is for dogs who cope with being alone. A dog who panics is not coping, so the number that matters is their own calm threshold.
Find that threshold by filming a short absence and noting when the first stress signs show up: whining, pacing, scratching at the door, drooling. Keep every practice absence shorter than that. The ASPCA notes that most anxious responses happen in the first 40 minutes alone, and that a dog who can stay calm for about 90 minutes can probably build toward a workday. While you train, arrange cover so your dog is not left alone past their limit on workdays: a sitter, daycare, a friend or a trip home at lunch.
This answer is part of Dog Separation Anxiety: The Complete Guide, written by The Alone & Okay team.
Why doesn't the usual "hours by age" rule apply?
Most advice about alone time is about bladders and boredom. Our general guide on how long a dog can be left alone covers that. Separation anxiety is different. The American Kennel Club quotes behaviorist Patricia McConnell describing it as something close to a panic attack. A dog in that state is not bored and is not waiting patiently. Every minute past their limit is a minute of real distress, and it teaches the dog that being alone is as bad as they feared.
That is why behavior professionals talk about thresholds instead of hours. The threshold is the longest absence your dog can handle while staying loose and calm. It can be very short. In a video study of 23 dogs with separation-related problems filmed at home, most dogs showed signs within 10 minutes of the owner leaving, and the average dog started vocalizing after about three minutes (Palestrini and colleagues, 2010).
How do you find your dog's number this week?
- Set up a camera with a live view on your phone. A laptop video call works too.
- Leave the way you normally would: shoes, keys, out the door. Wait outside or in the car.
- Watch for the first sign of stress, not the worst one. Common early signs are whining, pacing, panting, standing at the door, licking lips or scratching.
- Come back as soon as you see it, or at five minutes if nothing happens. Note the time.
- Repeat on two more days. Use the shortest time as your starting threshold. If your dog stays relaxed past 30 minutes, the problem may be milder than you thought, which is good news.
Write the times down. A simple note on your phone is enough, and it lets you see progress that is easy to miss day to day.
How fast should you build the time up?
The ASPCA's outline for moderate to severe cases starts with absences of one or two seconds and grows them very slowly, in many short daily sessions. The key rule is simple: every absence should end before your dog gets upset. If you see stress, go back to a shorter time and move up more slowly from there.
| Stage | What it looks like |
|---|---|
| Seconds to a few minutes | Tiny steps, often only a few seconds longer each session. Lots of easy repeats. |
| Up to about 40 minutes | The slow part. The ASPCA says most anxious reactions happen in this window. |
| 40 to 90 minutes | Bigger jumps become possible, such as 5 minutes and then 15 minutes at a time. |
| About 90 minutes calm | The ASPCA suggests a dog at this point can probably handle four hours, then work up from there. |
Not every session has to go up. Mixing in a few very short absences keeps the work easy and keeps your dog from guessing that each departure will be longer than the last. Short, calm sessions on most days beat one long session on the weekend.
What do you do on workdays while you train?
This is the part most owners skip, and it matters. If your dog is practicing five minute absences in the evening but is alone and panicking for eight hours during the day, the daily panic undoes the practice. The ASPCA is clear that during treatment a dog should not be left alone beyond their training sessions, and it notes that most dogs with separation anxiety are fine as long as someone is with them. That someone does not have to be you.
- Daycare on some or all workdays, if your dog enjoys other dogs.
- A sitter or a friend who works from home, even for a few days a week.
- A family member or roommate covering the longest days.
- Taking your dog to work, if your workplace allows it.
- Going home at lunch to split the day, if your dog's threshold is already long.
Do not use a parked car as a sitter in warm weather. The ASPCA warns that cars heat up fast and dogs can die from heatstroke even at 70°F. Our guide to leaving your dog home alone while you work has more cover ideas, including lower cost ones.
What are the signs you went past the limit?
- Barking, howling or whining that keeps going after the first minute.
- Scratching or chewing at doors, door frames or window sills.
- Drooling or a wet chest when you get back.
- Accidents from a dog who is house trained.
- A frantic greeting that takes a long time to settle.
If you see these, do not scold. The ASPCA points out that these are distress responses, not spite, and punishment can make the problem worse. The American Veterinary Society of Animal Behavior also recommends reward based methods for behavior problems and advises against aversive methods. Simply make the next session shorter.
How can you help the time pass more easily?
For mild cases, the ASPCA suggests a food puzzle toy that takes 20 to 30 minutes to finish, given only when you leave. Exercise before you go also helps, as do sniffing walks and short brain games like the ones in our mental stimulation games guide. Keep in mind that a very anxious dog often will not eat when alone. If the food toy is still full when you get home, that tells you the absence was too long, not that you need a better toy.
When should you get help?
Talk to your vet before you start, especially if accidents are part of the picture, since medical issues can look like separation problems. If your dog panics within seconds, injures themselves or tries to break through doors or crates, ask your vet about a referral to a board certified veterinary behaviorist, a certified applied animal behaviorist or a trainer with real experience in desensitization. Your vet is also the person to ask about any other options for severe cases.
What else do owners ask?
Can a dog with separation anxiety ever be left for a full workday?
Many dogs can get there with patient practice, but the timeline varies a lot from dog to dog. Plan cover for now and let the practice set the pace.
Is it okay to leave my dog for just 10 minutes to run an errand?
Only if 10 minutes is under your dog's threshold. If it is not, take your dog along or ask someone to stay with them.
Will my dog get used to it if I just keep leaving?
Usually not. Repeated panic tends to make dogs more sensitive to departures, not less. Short absences that stay calm are what build comfort.