Why Do Dogs Chase Their Tail?

Pet parents often tell stories about their dog spinning wildly, trying to grab their tail as it whooshes by. But while a dog chasing their tail is entertaining to humans, it may be misunderstood in many contexts.

Why Does a Dog Chase Their Tail?

There are a few situations where tail-chasing is probably a normal behavior.

For example, a puppy may become aware of their tail and begin checking it out with their mouth; their spinning is a short-lived effort to get more information about their tail. A dog might also chase their tail when they’re feeling excited or playful.

But there are other times when tail-chasing could indicate a problem. 

1. You’ve Reinforced the Behavior

When dogs chase their tail, we often respond with attention, which may reinforce the behavior. Some pet parents encourage the behavior by laughing, giving the dog a treat, or even by showing the dog their tail to encourage them to chase it.

This teaches the dog that tail-chasing will result in something positive, so they will do it more. If the attention stops, the dog may become frustrated and engage in the behavior even more, trying to get their pet parent to give them attention or treats.  

2. Your Dog Is Bored

All dogs need adequate activity to meet their physical, mental, and emotional needs. If these needs aren’t met, dogs can become bored and behave in ways that attempt to help them deal with the boredom. Tail-chasing is one example of this.

To combat boredom in your dog, try activities like:

• Walking your dog every day 

• Arranging play dates with other dogs

• Providing access to doggy activities such as sniffing new areas, digging, chewing (on safe chew toys!), running, and swimming

• Practicing and learning cues through positive reinforcement training

• Playing brain games and doing problem-solving activities, such as food puzzles 

Chronic boredom can also lead to anxiety, another factor that can lead to tail-chasing. 

3. Your Dog Is Stressed or Anxious

Chronic stress and anxiety are other underlying causes of dogs chasing their tail, especially if tail-chasing helps the dog avoid frightening situations or provides a feeling of relief.

Repetitive behaviors, such as tail-chasing, that are triggered by environmental conditions are known as stereotypic behaviors. They happen in predictable patterns or rhythms. For example, a dog held in a kennel without enough enrichment may begin to spin in a tight circle, grab their tail, and continue to spin.

This may happen in homes where dogs do not get the social interactions, physical exercise, and mental stimulation they need.

4. Your Dog Has a Medical Issue

If your dog is suddenly chasing their tail for the first time, or the behavior is increasing in frequency, there could be a medical condition or physical problem. Common culprits include:

• Anal sacculitis

• An irritated rectum

• Parasites

• Flea or tick infestation (fleas often congregate at the base of the tail)

• Pain

• Cancer

• Seizure disorder

5. Your Dog Has Canine Compulsive Disorder

Canine compulsive disorder (CCD) looks a lot like stereotypic behavior but happens without a connection to environmental factors. It can be hard to interrupt dogs with this issue when they’re chasing their tail, and they’ll likely go right back to the behavior even after they are given something else to do.

In CCD’s most severe form, the dog cannot be redirected, and the behavior—in this case, tail-chasing—will interfere with vital activities such as eating and drinking. In addition, some dogs will snap, bite, and chew on their tail until injury occurs, creating the risk for infection. 

Tail docking (removal of part or all of the tail) is not a cure for these compulsive behaviors.

Compulsive disorders in dogs are being studied, and there is evidence of a genetic component. It occurs in higher numbers in certain breeds, such as:

• Bull Terriers

• Miniature Bull Terriers

• German Shepherds

• Staffordshire Bull Terriers

For dogs with canine compulsive disorder, medication that helps regulate brain chemistry is typically necessary for any behavior modification or environmental changes to be effective. Talk to your vet for the best guidance.

When Should You See a Vet About Your Dog’s Tail-Chasing?

Tail-chasing that is difficult to interrupt or that’s accompanied by other symptoms should be addressed immediately. Take your dog to the vet if any of these symptoms are also present:

• Evidence of infection, parasites, abnormal masses, or other health problems

• Self-harm or injury

• Inability to eat, drink, rest, or interact with others normally

If you see any sudden behavior changes in your dog (tail-chasing being just one example), contact your veterinarian. They can assess your pet to identify and treat any medical causes.

How To Stop a Dog From Chasing Their Tail

Though tail-chasing can be a normal part of playful behavior, you can reduce and even stop it from happening if it's problematic.

Be Careful About Reinforcement

Reinforcing tail-chasing may lead to your dog using the behavior to command attention. Even negative reinforcement, such as yelling at your dog, can inadvertently reinforce the behavior, so it's best not to encourage tail chasing in the first place and ignore it if it does happen.

If you are training “spin” as a trick, it’s important to complete the training by establishing a cue to start and stop. When your dog chases their tail, always assess why they are doing so before assuming it’s funny.

Replace the Behavior

If your dog is chasing their tail because they want attention or are bored, train a replacement behavior.

For example, train the dog to retrieve a toy and sit or to sit and lift a paw when they want attention. Once these new behaviors are in place and consistently reinforced, the tail-chasing should reduce.

Make Sure They Have Plenty of Enrichment

For bored dogs, enrichment is the best place to start.

Be sure you’re giving your dog plenty of meaningful attention. Make sure your dog is well-exercised, has the opportunity to socialize if they like it, has access to interactive toys and puzzles, and receives plenty of opportunity to play training games.

Talk to a Professional

If the spinning continues, consider enlisting a professional such as a certified behavior consultant, certified dog trainer, applied animal behaviorist, veterinarian, or a veterinary behaviorist.