The Science Behind Why Dogs Cry: Are Those Tears Real?

Dogs are often referred to as “man’s best friend,” and their emotional bonds with humans are undeniable.

From wagging tails to joyful barks, dogs communicate their feelings in ways we can easily recognize.

However, there’s one behavior that often puzzles dog owners: the sound of their dog crying.

Whether it’s a soft whimper or loud howls, it’s clear that dogs express sadness, frustration, and sometimes joy through crying.

But are these tears really a sign of emotion, or is there something else going on?

In this post, we’ll dive deep into the science behind why dogs cry, and whether those tears are real.

Understanding Canine Tears

Dogs, like humans, have tear ducts and produce tears.

However, these tears aren’t always linked to emotions in the same way they are for us.

In humans, tears serve as both emotional and physiological responses, whether it’s from sadness, happiness, or irritation.

For dogs, tear production is primarily a physical function rather than an emotional one.

Tears in dogs are secreted by the lacrimal glands located near their eyes.

They serve to keep the eyes moist and remove debris.

While dogs do produce tears, they don’t often cry in the emotional sense that humans do.

Instead, their cries, whimpers, and whining are forms of vocal communication, often tied to anxiety, stress, or a physical need (such as hunger or pain).

Scientific Research About Dog Tears

Several studies have attempted to understand the emotional capabilities of dogs, and the question of whether dogs can “cry” in the human sense has long been debated.

A study conducted by Japanese researchers in 2015 found that dogs release more tears when they are around their owners than when they are alone.

This suggests that dogs do indeed have a special emotional bond with their human companions, as their tears increased when they were in the presence of their loved ones.

The study involved measuring tear production in dogs using a special absorbent paper strip placed under their eyes.

Results showed a significant increase in tear volume when dogs were reunited with their owners.

The Role of Oxytocin

Oxytocin is a hormone involved in social bonding and emotional attachment, and it plays a significant role in the relationship between humans and dogs.

When a dog experiences comfort and positive interactions, the levels of oxytocin rise, which could explain why a dog might “cry” or whine to gain attention from their human.

Dogs can also release oxytocin when they see their owners return home, even if they don’t produce tears.

Research from the University of Tokyo in 2015 showed that the presence of oxytocin in both dogs and humans during interactions strengthens the emotional bond between the two species.

This hormonal connection could make dogs more likely to express themselves emotionally, through crying or other vocalizations, when they feel distress or a need for affection.

While oxytocin has been linked to emotional bonding and positive experiences, it can also contribute to stress.

Misconceptions About Dog Tears

There are several misconceptions about dog tears that can lead to confusion or unnecessary concern.

Let’s clear up some of these misunderstandings:

Dogs only cry when they’re sad

While it’s true that dogs can experience emotions, their tears aren’t usually a direct result of sadness.

In fact, most of the time, dogs don’t shed tears from emotional distress at all.

Instead, tears often stem from physical causes, such as eye irritation, allergies, or infections.

It’s important to pay attention to other signs of distress, like whining or changes in behavior, if you think your dog might be feeling upset.

Tears always signal a health problem

It’s easy to jump to the conclusion that any tear production means your dog is sick, but that’s not necessarily true.

Some dogs naturally produce eye discharge, and this can be completely normal.

It’s especially common in certain breeds, like those with prominent eyes or loose eyelids.

If the tears are minimal and your dog is otherwise healthy, there may be no reason to worry.

Dogs cry like humans

Many people think dogs cry the same way humans do—by shedding tears when they’re sad or upset.

But this isn’t accurate.

While humans might cry as an emotional release, dogs don’t express themselves in this way.

Instead, they may produce tears for physical reasons, such as an allergic reaction or an eye infection.

It’s important to remember that a dog’s “crying” is different from human tears.

Tears are only a sign of distress

It’s a common belief that tears are always linked to distress or discomfort, but that’s not the case.

Environmental factors like dust, smoke, or windy conditions can cause temporary tear production.

If your dog’s tears seem to appear during certain activities or weather conditions, it may simply be a reaction to the environment, not an emotional response.

Tear production is abnormal

Finally, many people believe that any tear production is abnormal, especially in certain breeds.

However, some dogs naturally produce more tears due to their anatomy or breed traits.

For example, Bulldogs, Pugs, and other breeds with prominent eyes may have more tear discharge.

This is usually nothing to worry about unless the tears are excessive or accompanied by other symptoms, like redness or swelling around the eyes.

What to Do If Your Dog Seems to Cry?

If your dog seems to be crying, it’s important to understand the cause behind it.

Here are some steps you can take to figure out what’s going on and help them feel better:

Check for physical issues

First, take a close look at your dog’s eyes and overall health.

If the crying is accompanied by excessive tearing, redness, or discharge from the eyes, it could be a sign of an eye infection, irritation, or even a foreign object stuck in the eye.

It’s always a good idea to visit your vet to ensure there are no underlying medical issues.

Assess their environment

Sometimes, a dog’s crying can be a sign of anxiety or fear.

Are they in a new environment, or have they been left alone for a long time?

Dogs are very social creatures and changes in their routine or surroundings can make them feel stressed.

Creating a calm and secure space for them can often help ease their anxiety.

Provide attention and affection

Dogs may cry when they’re seeking attention, especially if they’re feeling lonely or neglected.

Spending quality time with your dog—playing, cuddling, or simply being present—can go a long way in calming them down.

This not only helps address their emotional needs but also strengthens their bond.

Exercise and mental stimulation

A dog who is physically and mentally stimulated is less likely to cry out of boredom.

Make sure your dog is getting enough exercise through walks, playtime, or other activities.

Mental challenges, like puzzle toys, can also keep their mind engaged and prevent frustration.

Consult a veterinarian

If your dog’s crying seems excessive, and persistent or is accompanied by other unusual symptoms (such as changes in appetite or behavior), it’s important to consult your vet.

They can help rule out any medical or behavioral problems that might be causing the crying and recommend the best course of action.

Final Thoughts

While dogs don’t cry emotionally in the same way humans do, their vocalizations, including crying, are still a form of communication.

Whether it’s due to a need for attention, physical discomfort, or emotional bonding, understanding the science behind dog tears helps us better respond to our furry friends’ needs.

Always be observant of your dog’s behavior and health to ensure they are happy and well cared for.