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Dog Behavior

The Vacation Is Over…So Why Is the Dog Still Acting Strange?

Dan Seymour
By Dan Seymour · Reviewed & fact-checked by Dr. Chyrle BonkVet Approved
Dr. Chyrle Bonk
Reviewed & Fact-Checked byDr. Chyrle BonkDVM (Veterinarian)
On top of caring for animals and writing for veterinary publications, Dr. Chyrle Bonk owns a small cattle herd! When she’s not busy with those things, she can be found somewhere enjoying the Idaho outdoors with her husband and two kids. Dr. Chyrle Bonk received her Doctor of Veterinary Medicine (DVM) from Oregon State University in 2010.View authorThe information is current and up-to-date in accordance with the latest veterinarian research. Learn more
Updated on August 19, 2026
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A small sad dog on a leash lies on the paving stones

It’s pretty normal to feel a bit down when your vacation comes to an end – no more breakfast buffet, no more room service, and no more poolside cocktails. But one of the best parts of coming home is seeing your dog losing its mind with excitement at the door. Except sometimes the reunion does not go quite as expected. The dog seems flat, or clingy, or oddly subdued, almost as though they’ve forgotten how to be themselves.

This is more common than most owners realize, and in most cases it has a straightforward explanation. Here are some of the reasons your dog might behave strangely after a vacation, and what to do about each one.

Disrupted Routine

Dogs are creatures of habit in a way that goes beyond preference. A predictable routine of consistent mealtimes, a reliable walk schedule, and the same daily rhythm provides a genuine sense of security. When a vacation breaks that routine, whether the dog came along or stayed behind, the disruption registers. Coming home does not instantly reset things, and it can take a few days for a dog to settle back into its normal pattern and feel confident that life has returned to its regularly scheduled programming. Fear not: most dogs recalibrate on their own within a week. You can help by getting back to life as normal, allowing them to follow your lead.

Corgi Puppy dog anxiety Sad
Image Credit: Paul's Lady, Shutterstock

Separation Anxiety Hangover

A dog that was left behind while its owner went on vacation may return to something resembling its pre-vacation self on the outside, while quietly becoming more anxious underneath. The worry that an owner might disappear again can produce behaviors that look a lot like clinginess: following from room to room, becoming unsettled when the owner picks up keys or puts on shoes, vocalizing when left alone, or becoming destructive in short stretches when no one is home.

Unlike a routine disruption, separation anxiety does not resolve on its own in a few days. It responds best to gradual desensitization, starting with very short absences of even a few seconds and building up slowly over time. Rewarding calm behavior during departures and arrivals, and making alone time engaging with puzzle toys, helps move the process along.

Overstimulation Fatigue

We’ve all experienced that feeling of needing a holiday to recover from our holiday. If the dog traveled along on the vacation, the behavioral change may have the simplest explanation of all: they are tired. Travel is stimulating and stressful for dogs even when it goes smoothly. New environments, unfamiliar smells, disrupted sleep, and the general sensory overload of being somewhere different all take a toll. A dog that seems unusually flat and sleepy for a day or two after returning home may just be recovering. As long as the lethargy passes and appetite stays normal, there is typically nothing to worry about.

Illness or Injury

When a dog seems ‘off’ after a vacation, illness or injury should always be considered. Dogs boarded with other animals can be affected by contagious conditions such as kennel cough, while dogs that traveled can be exposed to parasites, unfamiliar bacteria, or injuries that were not immediately noticed. 

Additionally, if they’ve been more active than usual on vacation, dogs may feel stiff or sore once they get back to their normal routine. Gently checking them for areas of stiffness or tenderness is a sensible first step. 

Signs like persistent lethargy, loss of appetite, vomiting, diarrhea, breathing changes, or unusual sensitivity when touched warrant a vet visit rather than a wait-and-see approach.

Dog Jack Russell Terrier dog getting bandage after injury on his leg at home
Image Credit: Liudmyla Guniavaia, Shutterstock

“Something” Happened 

When a dog that stayed with a sitter or in a boarding facility comes home acting differently, they may have had a difficult experience while away. This does not necessarily mean anything harmful occurred at the hands of the people caring for it. The environment itself can be stressful. Boarding kennels in particular involve significant noise, unfamiliar smells, and the presence of other dogs that can feel intimidating or overwhelming. 

Events or interactions that were unusual, startling, or stressful may have felt exaggerated purely because they were in a different environment with unfamiliar people. In most cases, dogs that are more reactive, anxious, or withdrawn after being away will get back to normal given time to decompress in a calm, familiar environment. If the reactivity or anxiety persists beyond a week or two, it’s best to seek veterinary advice.

Incidental Vacation Training

Not every behavioral change after a vacation is a cause for concern. Sometimes owners return to find their dog quieter and more settled than expected, and wonder if something is wrong, but the explanation is actually a good one. A dog that has been consistently rewarded for calm behavior and ignored when overexcited may simply be demonstrating exactly what it has been trained to do. A relaxed, measured greeting from a dog that used to launch itself at the door is progress, not a problem.

Low Mood or Depression

Dogs experience something recognizable as depression, and a significant disruption to their environment or routine can trigger it. A dog that was close to a sitter and has now lost that contact, or one that genuinely struggled while its owner was away, may return home quieter and more subdued than usual. General withdrawal accompanied by changes in appetite and sleep are the most common signs of doggy depression. In most cases, the dog's mood lifts naturally as the familiar routine returns and the bond with its owner is reestablished. If low mood persists without improvement beyond a week or two, a vet visit is the appropriate next step.

For most dogs, the post-vacation adjustment period is temporary and largely self-resolving. The combination of a consistent routine, calm reintroduction to normal life, and a little extra attention tends to do most of the work.

Featured Image Credit: eugenehill, Shutterstock


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