When Your Dog Destroys Things: Finding the Cause and Responding Well

In brief

A chewed-up sofa cushion, a scratched door, a hole in the carpet: when a dog destroys things, it isn’t malice but a need or a problem. Four things matter. First: chewing and exploring are normal behavior, especially in puppies and adolescent dogs. Second: destruction only when the dog is alone can point to a problem with being left alone; in a large clinical analysis, however, several different patterns lay behind such problems, including frustration and boredom, not just panic. Third: noise fears and pain are also possible causes. Fourth: scolding after the fact doesn’t help; in studies, the so-called guilty look depended on the owner’s behavior, not on whether the dog had done anything wrong.

This guide shows you how to tell the causes apart, limit the damage and respond in a targeted way.

1. Why dogs destroy things

Chewing, tugging, digging and scratching are part of normal dog behavior. Dogs explore their environment with their mouths. It becomes a problem when the behavior is directed at furniture, shoes, door frames or cables, or when it is an expression of stress, fear or pain.

In practice: the most important question is therefore not “How do I make this stop?” but “What does my dog need right now?” A puppy gnawing on a chair leg needs something different from a dog that scratches the front door whenever he’s left alone.

2. The most common causes

2.1 Teething and exploration

In practice: during teething, roughly between the third and seventh month of life, many puppies chew a great deal, and adolescent dogs often test once more what can be taken apart. Typically, the chewing also happens while you’re at home, it’s directed at whatever is within reach, and it’s easy to redirect. This is a developmental phase that calls for good alternatives and management.

👉 Puppy biting

2.2 Under-stimulation and boredom

Too little appropriate activity may play a role, but “boredom” cannot be diagnosed from destroyed household items alone. In an owner survey of 3,264 family dogs, the amount of daily exercise was the strongest environmental factor associated with separation anxiety: dogs with this problem got less exercise (Tiira & Lohi, 2015). The direction is open, because dogs that can’t be left alone are also harder to exercise. In a clinical analysis of 762 dogs with problems when left alone, one of the groups that emerged was associated with boredom (de Assis et al., 2020).

2.3 Frustration

Frustration arises when a dog wants something and can’t get it: the dog outside the window, the food on the counter, the person behind the closed door. In the analysis by de Assis et al. (2020), the signs shown when alone grouped into several components, including ones labeled exit frustration, redirected frustration and immediate frustration. Destruction can therefore be an outlet for frustration, not only for fear.

👉 The neurobiology of frustration in dogs

2.4 Problems with being left alone

In practice: if a dog destroys things only when he’s alone, a problem with being left alone is likely, especially if barking or howling, urine or feces in the house, panting or heavy drooling come with it. Destruction at the front door, door frame or windowsill often suggests that the dog wants to get out.

How common such problems are depends on where the line is drawn. In a survey covering 13,715 Finnish dogs, about 5 to 6 percent showed separation-related behavior in the high category; earlier estimates were two to three times higher, which the authors attribute to their stricter threshold (Salonen et al., 2020). In a long-term observation of Labrador retriever and border collie litters, most of the young dogs showed signs at least at times, and among the Labradors, 13 of 23 dogs showed them for more than a month (Bradshaw et al., 2002). Important for treatment: not every dog that destroys things when alone is panicking (de Assis et al., 2020).

👉 Separation anxiety in dogs

2.5 Noise fears

Some dogs destroy things because they are frightened by something that happens to occur while they’re alone: thunderstorms, fireworks, construction noise. Noise sensitivity was the most common of the anxiety-like traits examined in the Finnish survey, at 32 percent (Salonen et al., 2020). In a case series of 141 dogs, separation anxiety, thunderstorm phobia and noise phobia occurred together strikingly often; the authors recommend screening for the others whenever one of these diagnoses is made (Overall et al., 2001).

In practice: one clue is destruction that only happens on certain days, for example during a thunderstorm, or a dog that tries to dig into tight corners.

2.6 Physical causes

In an analysis by several veterinary behaviorists, a painful condition was involved, by a conservative estimate, in about a third of referred dogs; the authors advise treating suspected pain first (Mills et al., 2020). A review names, alongside pain, hormonal and neurological diseases among others as possible causes of behavior problems (Camps et al., 2019).

In practice: take note if an adult dog suddenly starts destroying things or if his appetite, stool, sleep or movement change at the same time. Gastrointestinal discomfort can show up as increased chewing or licking. If a dog regularly eats inedible things such as stones, fabric or wood (pica), always have it checked by a veterinarian.

3. Telling the causes apart: when, where, what

In practice: three questions help you narrow down the cause. Keep notes on what you observe for one to two weeks.

• When? Destruction while you’re at home points more toward exploration, boredom or frustration. Only when alone brings being alone into focus. Only on certain days suggests noises. A sudden onset in an adult dog suggests a physical cause.
• Where? Damage at the front door, door frame or window often points to the wish to get out. Destruction in tight corners can indicate fear. Damage scattered around the home fits exploration and boredom better.
• What? Puppies take whatever is within reach. Some dogs specifically go for things that smell of their person. That can fit a problem with being alone, but it doesn’t prove it.

In practice: the most valuable tool is a camera, such as an old phone. Record the first 30 to 60 minutes after you leave. A dog that settles quickly and goes for a cushion after a while shows a different picture from a dog that scratches at the door, panting, as soon as it clicks shut.

4. Management: limiting the damage

Management isn’t training, but it keeps your dog from practicing destruction again and again and protects him from cables, medication or small parts he could swallow.

4.1 Dog-proofing your home

In practice: put away anything that shouldn’t be chewed, and close doors to rooms you can’t secure, or use a baby gate. With puppies, this is the most important step.

4.2 A crate or separate area only if trained well

In practice: a crate or a separate area can help, but only if your dog has first learned, in small steps and with reward, that it’s a pleasant place to retreat to. A dog that panics when left alone won’t become calmer in a crate and can injure himself trying to get out.

4.3 Suitable chew items

In practice: offer things your dog is allowed to chew, such as chew roots or sturdy rubber toys that can be filled. Nothing should be small enough to swallow, and nothing should splinter.

How much toys alone achieve is less clear than you might think, though. In a controlled study of companion dogs, short-term access to toys, five minutes a day over twelve days, did not significantly change the welfare measures recorded (Chan et al., 2023). Chew items are a sensible thing to offer, but not a substitute for addressing the cause.

5. What helps, depending on the cause

5.1 Redirecting chewing

In practice: if you catch your puppy at the chair leg, interrupt him kindly, offer a permitted chew item and praise him when he chews it. Many puppies chew most when they’re overtired; then sleep helps more than another toy.

5.2 Activity and rest

In practice: good enrichment combines movement, sniffing and mental work. Food searches, small search games or sniffing walks give many dogs more than fetch. Rest matters just as much: a dog that is kept busy all the time sometimes doesn’t learn to switch off on his own. Set rest times and a comfortable resting place are part of the plan.

👉 Environmental enrichment in dogs

👉 Teaching your dog to settle

5.3 Practicing being alone gradually

If being alone is the core issue, gradual training is the heart of the work: absences short enough that the dog stays relaxed, extended only slowly. In a small controlled study of eight dogs, systematic desensitization combined with counterconditioning reduced the frequency and severity of separation-related behavior; in six dogs followed up three months later, the problem behavior had almost completely disappeared (Butler et al., 2011).

In practice: rituals before leaving, such as picking up your keys or putting on your shoes, can also become triggers. Practice them without leaving until they lose their meaning.

👉 Teaching your dog to be home alone

5.4 Getting help and ruling out physical causes

Problems with being left alone rarely resolve on their own, yet many owners don’t seek help: in the study by Bradshaw et al. (2002), the owners of only 6 of the 75 affected dogs had sought assistance.

In practice: if your dog is clearly stressed when alone, injures himself, or the destruction doesn’t improve over several weeks, get support from a qualified trainer or a veterinarian specializing in behavioral medicine. If the behavior started suddenly or there are physical signs, the first stop is the veterinary practice.

6. What to avoid

You come home, the cushion is in shreds, and your dog cowers with his tail tucked and his gaze averted. Many owners read this as a guilty conscience. In an experiment with 14 dogs, however, this guilty look didn’t depend on whether a dog had eaten a forbidden treat, but on whether the owner scolded; it was strongest in dogs that had obeyed and were scolded anyway (Horowitz, 2009). In a study of 64 dogs, dogs that had broken a rule were no more likely to look “guilty” when the owner returned than the others, and owners couldn’t tell from the greeting behavior whether their dog had done anything wrong (Hecht et al., 2012).

The guilty look is therefore not reliable evidence that the dog understands the earlier act as “wrong.” Scolding can influence behavior in the moment, but the question is what the dog learns from it, and at what cost. The cited studies do not show that a dog reliably links a delayed punishment to an object destroyed hours earlier. For dogs already struggling with being alone, adding pressure is therefore not a useful strategy.

In practice: long absences before the dog has learned to be alone, or using the crate as “punishment,” don’t help either. Cleaning up calmly, reviewing the situation with camera footage and notes, and addressing the cause achieve more.

👉 The guilty look in dogs

7. A note on the evidence

There is hardly any research on destructive behavior itself; the studies mostly concern being alone, fear or pain, where destruction is one sign among several. The analysis by de Assis et al. (2020) is based on 762 dogs with existing problems when left alone and describes patterns, not causes. The prevalence figures come from an owner survey (Salonen et al., 2020) and a long-term observation of only two breeds (Bradshaw et al., 2002), and they depend heavily on the threshold chosen. The link with exercise comes from a cross-sectional survey (Tiira & Lohi, 2015), and the case series on noise and separation anxiety from a clinical sample (Overall et al., 2001).

The training study on being alone is very small, with eight dogs (Butler et al., 2011), and the toy study tested only five minutes of toys a day (Chan et al., 2023). The information on pain is based on case reviews from behavioral medicine (Mills et al., 2020) and a review (Camps et al., 2019). The guilty-look experiments are small (Horowitz, 2009) or medium-sized (Hecht et al., 2012) but reach compatible results. The advice on telling causes apart by time, place and object, and on management, is practical experience and marked as such.

8. Conclusion

A dog that destroys things isn’t trying to annoy you. He is exploring, bored, frustrated, afraid or in pain. If you look closely at when, where and what gets destroyed, and film your dog when in doubt, you can usually figure out which cause is in the foreground.

The three things that make the difference:

Cause before measure. Observe time, place and object, film your dog when he’s alone, and have sudden changes checked by a veterinarian.

Management and suitable alternatives. Secure your home, offer permitted chew items, and provide activity and, just as much, rest.

Don’t punish after the fact. The guilty look is a response to you, and problems with being alone need gradual training rather than pressure.

Key takeaways on destructive behavior

Problems with being alone have different faces. In 762 dogs, several patterns emerged, including frustration and boredom, not just panic (de Assis et al., 2020).

How common depends on the threshold. About 5 to 6 percent of 13,715 Finnish dogs fell into the high category (Salonen et al., 2020); among young dogs of two breeds, most showed signs at times (Bradshaw et al., 2002).

Noise fears and separation anxiety often occur together. In a case series of 141 dogs, the diagnoses were clearly linked (Overall et al., 2001).

Gradual training shows promise. In a small controlled study, systematic desensitization clearly reduced separation-related behavior (Butler et al., 2011).

Keep pain in mind. A painful condition was involved in about a third of dogs referred for behavior problems (Mills et al., 2020).

The guilty look doesn’t show guilt. It depended on the owner’s scolding, not on the dog’s behavior (Horowitz, 2009; Hecht et al., 2012).

Working on a behavior problem with your dog? Our step-by-step dog behavior workbooks cover leash reactivity, being left alone, resource guarding, two-dog households, barking at passersby and noise fear.

References

• Bradshaw, J. W. S., McPherson, J. A., Casey, R. A., & Larter, I. S. (2002). Aetiology of separation-related behaviour in domestic dogs. Veterinary Record, 151(2), 43–46. https://doi.org/10.1136/vr.151.2.43
• Butler, R., Sargisson, R. J., & Elliffe, D. (2011). The efficacy of systematic desensitization for treating the separation-related problem behaviour of domestic dogs. Applied Animal Behaviour Science, 129(2–4), 136–145. https://doi.org/10.1016/j.applanim.2010.11.001
• Camps, T., Amat, M., & Manteca, X. (2019). A review of medical conditions and behavioral problems in dogs and cats. Animals, 9(12), Article 1133. https://doi.org/10.3390/ani9121133
• Chan, K., Arellano, C., & Horowitz, A. (2023). Here puppy, chew on this: Short-term provision of toys does not improve welfare in companion dogs. Animals, 13(21), Article 3340. https://doi.org/10.3390/ani13213340
• de Assis, L. S., Matos, R., Pike, T. W., Burman, O. H. P., & Mills, D. S. (2020). Developing diagnostic frameworks in veterinary behavioral medicine: Disambiguating separation related problems in dogs. Frontiers in Veterinary Science, 6, Article 499. https://doi.org/10.3389/fvets.2019.00499
• Hecht, J., Miklósi, Á., & Gácsi, M. (2012). Behavioral assessment and owner perceptions of behaviors associated with guilt in dogs. Applied Animal Behaviour Science, 139(1–2), 134–142. https://doi.org/10.1016/j.applanim.2012.02.015
• Horowitz, A. (2009). Disambiguating the “guilty look”: Salient prompts to a familiar dog behaviour. Behavioural Processes, 81(3), 447–452. https://doi.org/10.1016/j.beproc.2009.03.014
• Mills, D. S., Demontigny-Bédard, I., Gruen, M., Klinck, M. P., McPeake, K. J., Barcelos, A. M., Hewison, L., Van Haevermaet, H., Denenberg, S., Hauser, H., Koch, C., Ballantyne, K., Wilson, C., Mathkari, C. V., Pounder, J., Garcia, E., Darder, P., Fatjó, J., & Levine, E. (2020). Pain and problem behavior in cats and dogs. Animals, 10(2), Article 318. https://doi.org/10.3390/ani10020318
• Overall, K. L., Dunham, A. E., & Frank, D. (2001). Frequency of nonspecific clinical signs in dogs with separation anxiety, thunderstorm phobia, and noise phobia, alone or in combination. Journal of the American Veterinary Medical Association, 219(4), 467–473. https://doi.org/10.2460/javma.2001.219.467
• Salonen, M., Sulkama, S., Mikkola, S., Puurunen, J., Hakanen, E., Tiira, K., Araujo, C., & Lohi, H. (2020). Prevalence, comorbidity, and breed differences in canine anxiety in 13,700 Finnish pet dogs. Scientific Reports, 10, Article 2962. https://doi.org/10.1038/s41598-020-59837-z
• Tiira, K., & Lohi, H. (2015). Early life experiences and exercise associate with canine anxieties. PLOS ONE, 10(11), Article e0141907. https://doi.org/10.1371/journal.pone.0141907

Note: This guide does not replace individual advice. If your dog is highly stressed when alone, injures himself, eats inedible things or suddenly changes his behavior, have him examined by a veterinarian and get professional support.

Frequently asked questions about dogs that destroy things

Causes, training and everyday life