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Behavior · Stress · Vet first
№20

Compulsive Behaviors — When the Funny Habit Is Not Funny

Repetition that calms the dog is the hardest kind to change, and the easiest to film.

Chasing a tail, snapping at nothing, licking the same spot on the same leg every evening: these get described as quirks, and sometimes that is all they are. This chapter is about the line where a quirk becomes a problem, what has to be checked before anything is called behavioral, and what actually helps.

WE ARE NOT VETS. We mention medicines for information only, but only your vet decides the dose. Never give your dog any medicine — especially not human medicine — without asking your vet first.

What should I do about my dog’s compulsive behavior?

Start at the vet, because pain, skin disease and neurological problems have to be ruled out first — the leg a dog licks raw may be a leg that hurts. If it is compulsive, the behavior is self-reinforcing: it settles the dog, which is exactly why it does not stop on its own and why blocking it changes nothing about the reason it is there. The work is on the stress and the routine around it, and severe cases belong with a veterinary behaviorist.

A breed summary is only a prejudice about the breed.

You can use prejudices — but get to know your own dog.

It depends on the breeding, the environment, and the dog’s own character. He may have all of the breed’s traits, some of them, or none. Every dog is his own.

1 What counts as compulsive

The clinical term is canine compulsive disorder: repetitive, sustained behavior, performed out of context, that gets in the way of normal life. The usual list:

  • Tail chasing and spinning
  • Flank sucking, object sucking
  • Light and shadow chasing
  • Surface licking — floor, walls, furniture
  • Licking one spot raw (acral lick dermatitis)
  • Pacing, snapping at nothing, freezing and staring
  • Drinking far more than a dog needs — a behavioral cause is rare here (VCA), so take him to the vet

Three words do the work in that definition: repetitive, out of context, interfering. A dog who chases his tail for ten seconds and then goes to sleep is playing. A dog who does it for twenty minutes, every evening, and cannot be called out of it, is not.

How common it is depends on where you draw the line. We could not tie any figure to a primary source: what is usually quoted for the diagnosed end is a small percentage of dogs, so treat that as a rough scale. The mild end is far more common than the clinical end — and the mild end is where people laugh and film it.

2 Why it does not simply stop

This is the part that changes how you think about it.

The behavior itself calms the dog. It is self-reinforcing: performing it settles him, which makes it more likely the next time the pressure rises. That is why it is not a habit in the ordinary sense and why waiting for him to get bored does not work. He is not doing it for no reason. He is doing it because it works.

The practical consequence follows directly, and it is easy to get it backwards:

What the dog is doingWhat blocking it achieves
Using a behavior that lowers his stressThe behavior stops for a moment
The stress that produced itUnchanged
His way of coping with itNow gone too

So stopping the movement is not the intervention. The intervention is aimed at the reason the movement is there.

3 Medical first, always

Nothing here is behavioral until a vet says it is not medical. Pain, skin disease and neurological conditions all produce repetitive behavior, and they come first.

The leg he licks may be a leg that hurts. Skin disease, allergy, a joint underneath, a healed injury that still bothers him: any of those produce a dog licking one place over and over, and no amount of behavioral work will touch them.

Paw licking is the most misread behavior in this entire area, because it sits on two lists at once: it is on the compulsive list above, and it is the classic sign in the allergy literature. Same picture, two different departments — see food allergies and hot spots.

And one more, specific to this breed: licking, lip-smacking and repeated swallowing can be nausea or reflux rather than compulsion. For a flat-faced dog that is not an exotic possibility — see hiatal hernia. A dog who gulps at the air after meals is telling you about his stomach, not his mind.

4 Where it comes from

The clinical picture is a combination of genetics, stress and brain chemistry, and the genetic part is visible in how neatly certain behaviors line up with certain breeds:

BehaviorBreed most associated with it
Flank suckingDoberman Pinscher
SpinningBull Terrier
Fly chasingMiniature Schnauzer
Licking one spot rawMany medium and large breeds

A Finnish owner survey (Salonen et al., 2020; 13,715 dogs) measured compulsion as one of seven anxiety-related traits and found large differences between breeds, which points the same way.

And here is the gap: we found no French Bulldog-specific compulsive pattern in any of this, and no figure for the breed. That is not the same as “it does not happen”. It means we did not find a published number, and we are not going to invent one.

5 What one study found about tail chasing

One study (Tiira et al., PLOS ONE, 2012; 368 dogs from four breeds) looked specifically at the environment around compulsive tail chasing, comparing dogs that chase their tails with control dogs. Its findings are worth reading carefully: they are associations, not proven causes.

  • Tail chasers were shyer than the comparison dogs.
  • Tail chasers had been separated from their mothers earlier than the comparison dogs.
  • Onset was early — typically between 3 and 6 months.

The early-separation result is one more appearance of the same few weeks. It turns up in the research on fear, on bite control and on adult problem behavior as well — see the socialization chapter. Different problems, same window.

6 What helps

1. The vet, first. Before anything is called compulsive, the medical causes are ruled out. If they are found, that is the answer, and it is a better answer than a behavior plan.

2. Work on the pressure, not on the movement. What is the dog under? Noise, isolation, boredom, an unpredictable day, too little sleep, a household in a bad week. Lower that, and the behavior loses its job.

3. Make the day predictable. Routine is not a luxury for a dog who is already using a self-soothing behavior. Sleep may matter here too: studies find a link between sleep and behavior, not a cause (see the sleep chapter).

4. Give the behavior an alternative that is allowed. Chewing, sniffing, licking something designed for licking — an outlet, rather than an empty space where the behavior used to be. The chewing chapter covers what those look like.

5. If it is escalating, if he is hurting himself or if it lasts for hours, take him to a veterinary behaviorist. Medication for compulsive disorders exists, it is prescribed and monitored by a vet, and what to use is their decision, never a website’s.

7 Spike: our experience

Our stories and opinions on this page are our personal experience with one dog, Spike. One dog is not the measure for every dog — for your dog, your vet decides.

Spike

“Paws, sometimes. And it turned out not to be a behavior problem at all.”

Spike has none of the behaviors on the list above. No surface licking, no tail chasing or spinning, no shadow chasing, no repeated empty swallowing. The one thing he does do is lick his paws, sometimes.

And that is the interesting part, because paw licking is exactly the behavior this chapter warns about in both directions. For him it is skin, not compulsion — when he is itchy or something is irritated, he licks a paw. That was worked out over years of watching, long before we wrote any of this down.

Which is worth saying about the rule “rule out the medical first”. It is written as though a vet does the ruling out in one visit. In our case the first clue came from the person living with the dog, by watching what came before the licking and what went with it. The rule is right: we notice, the vet rules out.

The harder half: Spike has a chronic allergy that has followed him all his life, and he also scratches more when he is excited. Our opinion, not a diagnosis: the allergy is environmental. We have changed several things and the result is the same; he scratches more in summer, and in certain months it goes up and down. One behavior, two things going on at the same time. “Rule out the medical” does not settle that, because the medical is present and still not the whole story. We watch which one is driving it on a given day, and some days we simply cannot tell.

Owners Also Ask

What should I do about my dog’s compulsive behavior?

Start at the vet, because pain, skin disease and neurological problems have to be ruled out first — the leg a dog licks raw may be a leg that hurts. If it is compulsive, the behavior is self-reinforcing: it settles the dog, which is exactly why it does not stop on its own and why blocking it changes nothing about the reason it is there. The work is on the stress and the routine around it, and severe cases belong with a veterinary behaviorist.

Is tail chasing always a problem?

No. A short burst of tail chasing in a playful dog who then does something else is play. The clinical picture is repetitive, sustained, out of context and interfering with normal life: twenty minutes at the same time every evening, hard to interrupt, and the dog cannot settle without it.

Why does my dog keep licking the same paw?

That question belongs to two departments at once. It is on the compulsive list, and it is the classic sign of skin trouble or allergy, and the medical side is checked first. In a flat-faced dog, licking, lip-smacking and repeated swallowing can also be nausea or reflux rather than anything behavioral.

Should I stop him when he does it?

Blocking the movement does not deal with what produced it. Compulsive behavior calms the dog, so stopping it removes his way of coping while the pressure stays exactly where it was. The useful work is on the stress, the routine, the sleep and the outlets he does have. If he is licking a spot raw or it is bleeding, take him to the vet; how to protect it is the vet’s decision.

Do French Bulldogs get compulsive disorders?

We did not find any French Bulldog-specific pattern or figure in the research, and we would rather say that than fill the gap. Breed differences in anxiety-related traits are large in the Finnish data, and certain compulsions line up strongly with certain breeds, but we did not find a published number for this one.

References

  1. Tiira K et al. Environmental Effects on Compulsive Tail Chasing in Dogs. PLOS ONE (PMC). ncbi.nlm.nih.gov
  2. VCA Animal Hospitals — Compulsive Disorders in Dogs. vcahospitals.com
  3. VCA Animal Hospitals — Testing for Increased Thirst and Urination. vcahospitals.com
  4. Clinician’s Brief — Canine Compulsive Disorder: diagnosis, treatment, management. cliniciansbrief.com
  5. Salonen M et al. Prevalence, comorbidity, and breed differences in canine anxiety in 13,700 Finnish pet dogs. Scientific Reports, 2020. nature.com
Spike the French Bulldog
About the Author

Spike’s Dad

Not a veterinarian — the human behind Spike, a dark brindle Frenchie, for 7+ years. What is written here is checked as carefully as we can against the sources listed above. When real life with Spike differs from the studies, we say so.

How this site is researched →

A Note from the Editors

This page is educational only. We are not veterinarians, we do not treat dogs and we do not diagnose. We help you understand your dog better, notice early when something is wrong and know what to ask your veterinarian. In many of these topics we are new ourselves. We collect the knowledge and opinions we find on the internet, among them studies, veterinary university websites, and owner forums, so you do not have to search for them. We check what we can, and we mark what comes from forums or unofficial sites. What to believe is for you and your veterinarian to decide. Do your own research before you act on any of it; we are not responsible for any harm that follows.

Nothing on this website replaces a veterinary consultation.

Further Reading