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  1. Why Do Dogs Do That? Quirky Dog Behaviors Explained

Why Do Dogs Do That? Quirky Dog Behaviors Explained

Why Do Dogs Do That? Quirky Dog Behaviors Explained

Penny DiLoreto, Certified Behaviorist and Professional Dog Trainer
March 14, 2026
Why Do Dogs Do That?
Quirky Dog Behaviors Explained by Penny DiLoreto, CPDT-KA

If you live with a dog, you've probably caught yourself asking at least once: "Why on earth are they doing that?"


Dogs have a lot of charming—and sometimes puzzling—habits. While some behaviors seem strange from a human perspective, most actually make perfect sense in the canine world.


Understanding the motivation behind these behaviors helps us respond with patience and better communication.


Here are several common dog behaviors and what's really going on behind them.

Why Do Dogs Eat Poop?

why do dogs eat poop?
The technical term for poop-eating is coprophagia, and while it's unpleasant for us, it's surprisingly common in dogs.
There are several possible reasons this behavior occurs.

Instinct

In the wild, mother dogs clean the den by eating their puppies' waste to keep the area sanitary and avoid attracting predators.

Curiosity

Puppies explore the world with their mouths. Unfortunately, that sometimes includes things we'd rather they avoid.

Nutritional Curiosity

Dogs may be drawn to feces that still contains undigested nutrients—especially if the diet is highly processed.

Attention-Seeking

If a dog learns that eating poop immediately gets a dramatic reaction from their human, the behavior can become a reliable way to get attention.

Stress or Boredom

Dogs that lack mental stimulation may develop unusual habits simply to give themselves something to do.

The good news is that in most cases this behavior can be reduced through management, improved enrichment, diet adjustments, and training.

If you'd like a deeper explanation of this behavior and practical ways to stop it, read our article Why Do Dogs Eat Poop? Causes and How to Stop It.

Why Do Dogs tilt Their Heads?

why do dogs tilt their heads?
That adorable head tilt isn't just for cuteness—although it certainly works on us.


Dogs often tilt their heads to better understand what they're hearing. By shifting the angle of their ears, they may be able to pinpoint the direction of a sound more accurately.


Head tilting can also happen when dogs are trying to interpret human communication. Dogs are experts at reading our tone of voice, facial expressions, and body language.


When they hear familiar words like "walk," "treat," or "car," they may tilt their heads while processing the information.


There may also be a visual component. Some researchers believe dogs with longer muzzles tilt their heads to improve their view of our faces, helping them read our expressions.


And yes—many dogs eventually learn that humans find this behavior irresistibly cute.

If you'd like a deeper explanation of this behavior, read our article: Why Do Dogs Tilt Their Heads? What That Cute Behavior Really Means

Why Do Dogs Dig?

why do dogs dig?
Digging is deeply rooted in canine instinct.
Dogs dig for several different reasons.


Ancestral Behavior

Wild canines dig dens for shelter and protection.


Hiding Valuables

Dogs sometimes bury toys, bones, or food to save them for later. This behavior comes from ancestors that needed to store extra food.


Temperature Control

On hot days, dogs may dig to reach cooler soil beneath the surface.


Entertainment

For high-energy dogs, digging can simply be fun. It releases energy and satisfies natural instincts.


Breed Tendencies

Some breeds—especially terriers, dachshunds, and northern breeds—were specifically bred to dig.


If digging becomes destructive, it usually means the dog needs more exercise, enrichment, or an appropriate digging outlet such as a designated digging area.

If you'd like a deeper explanation of this behavior, read our article:  Why Do Dogs Dig? Understanding This Natural Dog Behavior

 

Why Do Dogs Bark at Nothing?

why do dogs bark at nothing?
From a human perspective, it can seem like dogs bark at absolutely nothing. But usually they're responding to something we simply cannot detect.
Dogs have:
  • far more sensitive hearing than humans
  • better scent detection
  • heightened awareness of subtle movement

Your dog might be reacting to:

  • a distant dog barking blocks away
  • wildlife moving outside
  • a car door closing down the street
  • a delivery person approaching before you hear them
  • subtle household vibrations or sounds

Dogs also bark to communicate emotions such as excitement, frustration, alertness, or anxiety.


So while it may sound like your dog is barking at nothing, they are usually responding to something meaningful in their environment.

If you'd like a deeper explanation of this behavior, read our article: Why Do Dogs Bark at Nothing? What Your Dog Is Really Hearing

Why Do Dogs Get the Zoomies?

why do dogs get the Zoomies?
Those sudden bursts of wild running, spinning, and ricocheting around the house are commonly called zoomies.
The scientific term is FRAPs — Frenetic Random Activity Periods.


Zoomies are completely normal and usually happen when dogs experience a sudden release of energy or excitement.


Common triggers include:

  • after a bath
  • after being crated or resting
  • during playtime
  • in the evening when energy spikes
  • when a dog feels especially happy or relieved

Think of zoomies as the canine version of a kid sprinting around the playground after sitting in class all day.


They're usually harmless—just make sure your dog has a safe space where they won't crash into furniture or slip on the floor.

If you'd like a deeper explanation of this behavior, read our article: Why Do Dogs Get the Zoomies? Understanding Frenetic Random Activity Periods

Why Do Dogs Chase Their Tails?

why do dogs chase their tails
It can be hilarious to watch a dog spin in circles after their own tail, but there are a few different reasons behind this dizzying behavior.


Puppy Exploration

For young puppies, a tail is just a fascinating toy that happens to follow them everywhere. It's simply a fun way to explore their own bodies and practice coordination.


Boredom or Excess Energy

If a dog isn't getting enough physical or mental exercise, they might resort to tail chasing as a way to burn off pent-up energy.


Attention-Seeking

Just like eating poop or barking, if a dog realizes that chasing their tail makes you laugh and give them attention, they will keep doing it!


Medical or Compulsive Issues

Occasionally, tail chasing can indicate a physical issue like fleas, impacted anal glands, or even a compulsive behavioral disorder. If your dog can't seem to stop or is injuring their tail, it's a good idea to consult your veterinarian.


If you'd like a deeper explanation of this behavior, read our article: The Dizzying Truth: Why Do Dogs Chase Their Tails?


Why Do Dogs Sniff Butts?

Why Do Dogs Sniff Butts
It's the classic canine greeting! While it might seem embarrassing to us, a butt sniff is essentially the dog equivalent of a polite handshake.


The Canine Calling Card

A dog's sense of smell is incredibly powerful. Just inside a dog's rectum are anal glands that secrete a unique scent. This scent acts like a biological calling card.


Information Gathering

By sniffing another dog's rear end, your dog can instantly determine the other dog's gender, diet, health status, and even their emotional state. It's a highly efficient way to get to know a new friend.


Avoiding Conflict

Because dogs gather so much information this way, a proper greeting helps them determine if the other dog is friendly or a threat, which actually reduces the chance of a fight. It's perfectly healthy, normal behavior for socialized dogs.


If you'd like a deeper explanation of this behavior, read our article: The Canine Handshake: Why Do Dogs Sniff Butts?


Why Do Dogs Sleep in Weird Positions?

Why Do Dogs Sleep in Weird Positions
Whether they are sprawled on their back with legs in the air or contorted into a pretzel, your dog's sleeping position tells you a lot about how they are feeling.


Temperature Regulation

Dogs regulate their body heat through their bellies and paws. Sleeping belly-up exposes areas with less fur to the air, helping them cool down. Conversely, curling tightly into a ball helps them conserve body heat on chilly nights.


Feeling Safe and Secure

A dog's belly is their most vulnerable area. If your dog is sleeping on their back, completely exposed, it's a huge compliment! It means they feel completely safe and secure in their environment.


Deep REM Sleep

When dogs are in a deep sleep, you might see their paws twitching, hear little muffled barks, or see them sleeping in odd, relaxed angles. They are likely just acting out a dream!


If you'd like a deeper explanation of this behavior, read our article: The Pretzel Pup: Why Do Dogs Sleep in Weird Positions?


Why Do Dogs Lick Windows?

Why Do Dogs Lick Windows
Finding nose prints and lick marks all over your glass doors and car windows is a familiar reality for pet parents, but why do they do it?


Sensory Exploration

Dogs explore the world with their mouths. Condensation on a window can offer an interesting texture or a cool drink of water. Sometimes, they just like the physical sensation of the smooth glass on their tongue.


Anxiety or Soothing Behavior

Licking releases endorphins, which are natural feel-good chemicals in a dog's brain. If a dog is feeling stressed or anxious—such as when watching a squirrel outside that they can't reach—licking the glass can be a self-soothing mechanism.


Boredom

A dog staring out a window all day might just be looking for something to do. Licking the window breaks up the monotony. If it becomes an obsessive habit, adding more interactive toys or puzzle feeders can help redirect that energy.


If you'd like a deeper explanation of this behavior, read our article: The Glass Connoisseur: Why Do Dogs Lick Windows?


Why Do Dogs Hang Their Heads Out the Car Window?

Why Do Dogs Hang Their Heads Out the Car Window
It's an iconic image: a happy pup with their ears flapping in the breeze as you cruise down the road. But what makes this open-window experience so irresistible to them?


An Olfactory Buffet

A dog's sense of smell is their primary way of understanding the world. When they stick their head out of a moving vehicle, the high-speed airflow forces a massive, ever-changing stream of scents right into their highly sensitive noses. For a dog, it's like binge-watching an action movie, but entirely through smell!


Visual Excitement

The fast-paced movement provides a thrilling amount of visual stimulation. They get to take in new landscapes, other animals, and people zipping by, which is far more entertaining than their standard view of the backyard.


The Cooling Breeze

Just like we enjoy sitting in front of a fan on a hot day, dogs love the physical sensation of the wind rushing through their fur. It helps them cool down, stimulates their senses, and simply feels exhilarating.


A Quick Note on Safety

While it's undeniably cute, flying debris, insects, or sudden stops can make having their whole head out the window a bit risky. It's usually safest to roll the window down just enough for their nose to catch the breeze, or to use a dog-specific seatbelt harness so they can enjoy the sights and smells securely.


If you'd like a deeper explanation of this behavior, read our article: The Joy Ride: Why Do Dogs Hang Their Heads Out Car Windows?


Ask Penny Your Dog Behavior Questions

Penny DiLoreto, Certified Animal Behaviorist and Professional Dog Trainer
If your dog is showing behaviors that feel confusing or challenging, you're not alone. Understanding the motivation behind a behavior is often the first step toward improving it.


A knowledgeable trainer can help translate what your dog is trying to communicate and help you build a stronger relationship together.


Have a dog behavior question you'd like Penny to answer in a future article?


Send it to us and it may appear in an upcoming "Ask Penny" post. 🐾 Send to: INFO@hotdiggitydogresort.com

Links To Dog Behavior Guides Mentioned In This Article

  • Why Do Dogs Eat Poop?
  • Why Do Dogs Tilt Their Heads?
  • Why Do Dogs Dig?
  • Why Do Dogs Bark at Nothing?
  • Why Do Dogs Get Zoomies?
  • Why Do Dogs Chase Their Tails?
  • Why Do Dogs Sniff Butts?
  • Why Do Dogs Sleep in Weird Positions?
  • Why Do Dogs Lick Windows?
  • Why Do Dogs Hang Their Heads Out the Car Window?

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