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Why Is My Dog Licking the Floor?

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Your dog has a few favorite pastimes: licking his food bowl, licking himself and licking the floor. He’s been known to lick the linoleum, taste the tile, and wipe down the wood with the fervent flick of his tongue.

There’s an obvious “ick” factor that comes from walking through the puddle of drool your dog left on the floor but it’s also just, well, weird. Or is it?

“Licking the floor can be totally normal,” says Dr. Sara L. Bennett, clinical assistant professor of veterinary behavior at North Carolina State University College of Veterinary Medicine.

Dog Licking: What’s Normal?

Dog sitting on floor licking mouth

Dogs use their tongues for eating and grooming—lapping up kibble from the bottom of a bowl, taking a quick tongue bath, or offering up wet kisses are all normal behaviors, according to Bennett. However, habitual licking might be the sign of an issue.

“In the right context, licking is considered a normal behavior,” she adds.

To determine whether licking is a normal behavior, Bennett looks at where the licking occurs. In areas where there might be food scraps—think near their food bowls after supper or around the kitchen island—dogs might lick the floor to see if something tasty has fallen.

Dog licking paw while laying on the floor

Frequency, intensity, and duration matter, too. Bennett notes that dogs that are licking the floor—or furniture, themselves, people, the air—nonstop without a specific reason could be a sign that something more serious is going on. In these cases, excessive licking of surfaces (or ELS), may be diagnosed.

“When it becomes more habitual—it’s happening multiple times a day in areas where there’s no food present…it lasts more than a couple of minutes and the behavior can’t be interrupted [by calling the dog or offering a treat], it starts to fall into the ‘abnormal’ category and we have to do some detective work to figure out why.”

Why Is My Dog Licking the Floor?

Puppy licking the floor

When it comes to deciphering the reasons your dog keeps licking the floor, there are a few common causes including:

  • Food
  • Upset stomach
  • Stress
  • Cushing’s Disease


Dog drinking spilled milk on the floor

One of the biggest reasons your dog licks the floor? It may taste really good, says Bennett. A few drops of spilled coffee, a bit of bacon grease, a few scraps of spaghetti sauce can send your dog into a floor-licking frenzy to make sure every last drop is devoured.

“If you spill some food on the floor, of course your dog is going to be motivated to lick it up,” Bennett says.

When your dog is frantically licking the floor near the stove, your meal prep area, or the spot where she eats her kibble, Bennett says it’s likely nothing more than a desire to make sure every crumb is consumed.

As long as there aren’t scraps of foods that are toxic to dogs on the floor, it’s ok to let your dog serve as a four-legged vacuum.

Upset Stomach

Dog laying on the ground looking sick

Tummy troubles are among the most common reasons your dog’s licker may be working overtime. In fact, one study found that 73 percent of dogs that displayed ELS were diagnosed with gastrointestinal issues ranging from irritable bowel syndrome and pancreatitis to giardia.

“The hypothesis is that it’s a behavioral reaction to feeling sick to their stomachs,” Bennett explains.

It seems that the constant mouth and tongue movements your dog uses to lick the floor (and other surfaces) increases saliva production, which buffers against the acid in the stomach, according to Bennett. Or, perhaps the saliva provides added lubrication to make it easier to vomit, she adds.

When tummy upset is to blame, your dog may be licking the floor and vomiting, licking the floor and eating grass, or licking the floor and panting. Your vet can run tests to determine the source of the tummy upset. Treating the problem should help control the behavior (and feel better).


Poodle licking his lips after licking the floor

Like all repetitive behaviors, a dog constantly licking the floor could be a sign of an obsessive disorder or stress.

“Repetitive floor licking can be a ‘displacement behavior’ and might be a signal that your dog is experiencing anxiety,” explains Dana Emerson, a veterinary technician and Karen Pryor Academy-certified trainer with the University of Minnesota Veterinary Medical Center.

Emerson suggests looking at recent changes to the environment (like a move or new pet) that may be making your dog feel anxious or determining whether there are certain triggers that are associated with licking the floor such as thunderstorms, beeps, buzzers, or loud noises.

Understanding the trigger can help address the stressor and keep your dog from constantly licking the floor.

Cushing’s Disease

Dog looking sad thinking about why dogs lick the floor

Increased levels of cortisol, the stress hormone, can trigger chronic stress, leading to a diagnosis of Cushing’s disease, Bennett says. The hallmark signs of this disease include increased thirst, urination, appetite, excessive panting, low energy levels, hair loss, and frequent skin infections.

Not all dogs with Cushing’s disease constantly lick the floor (or other surfaces), Bennett notes, “The chronic stress state works against the normal mechanisms of keeping the GI tract healthy,” and that stomach upset could cause excessive licking behaviors.

Your vet can do blood work to get a definitive diagnosis and medications can help manage the disease.

What to Do if Your Dog Keeps Licking the Floor

Shiba Inu laying on the floor licking

Remember, licking the floor can be a totally normal behavior, especially if your dog is lapping at the linoleum while you’re making dinner or dishing up her kibble—but if the behavior starts suddenly, increases in frequency or intensity, or happens when there is no food around, it could be a sign something is wrong.

“Talk to your vet,” Bennett advises. “They can do the detective work to get to the cause and come up with a treatment plan.”

Dog Licking the Floor: Diagnosis and Treatment

Dog at the vet getting an exam

A comprehensive physical exam is often the starting point for determining why your dog is suddenly licking the floor.

Your vet will be on the lookout for physical symptoms such as bloating, hunched back, weakness, fever, hair loss, and skin infections that could be signs of illnesses like pancreatitis or Cushing’s disease. You’ll also be asked questions about recent changes in environment or behavior like vomiting, eating grass, diarrhea, or loss of appetite.

Depending on their findings during the physical exam, your vet may recommend blood tests, X-rays, ultrasound, or fecal samples to get more information for a definitive diagnosis. When excessively licking the floor is linked to a gastrointestinal issue or Cushing’s disease, medication may be prescribed to treat the illness.

If there are no signs of a physical illness, your vet may suggest consulting with a behaviorist to determine if stress or a compulsive disorder could be to blame.

With medical or behavioral treatment, your dog can go from obsessively licking the floor to only tasting the tile when food has fallen.



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