A dog “crying” isn’t automatically a bad sign, but it can be. Dogs cry in two distinct ways: vocalizations like whining and whimpering, and visible tears or watery eyes. Each has different causes, and some are perfectly normal while others signal pain, illness, or emotional distress that needs attention. The key is reading the context and watching for accompanying symptoms.
What “Crying” Actually Means in Dogs
Dogs don’t cry the way humans do. When people talk about a dog crying, they usually mean one of two things: the dog is making high-pitched vocal sounds (whining, whimpering, yelping), or the dog’s eyes are visibly watery or producing discharge. These are separate issues with different explanations.
Interestingly, dogs may produce something closer to emotional tears than scientists previously thought. A 2022 study found that pet dogs produce a larger volume of tears when reunited with their owners than with acquaintances, likely driven by a surge in the bonding hormone oxytocin. This could be the first evidence of emotional crying in a nonhuman animal. But day-to-day, most visible tearing in dogs has a physical rather than emotional cause.
Why Dogs Whine and Whimper
Vocal crying is the most common form, and it’s usually communication rather than a crisis. The ASPCA identifies four primary triggers: seeking attention, excitement, anxiety, and appeasement. A dog whining at dinner time wants food. A dog whining at the front door when you come home is excited. A dog whining during a thunderstorm is stressed. None of these are emergencies, though persistent anxiety-driven whining is worth addressing.
Appeasement whining looks a bit different. Dogs doing this typically adopt a submissive posture: tail tucked, body lowered, head down, eyes averted. This is the dog’s way of signaling that they’re not a threat, and it’s common in dogs who are naturally more deferential or who’ve been scolded. It’s normal social behavior, not a sign of suffering.
Separation anxiety is another common cause. If your dog only cries just before you leave or while you’re gone, that pattern points to distress tied specifically to your absence. This type of crying tends to escalate over time if left unaddressed, and it responds well to behavioral training and, in some cases, medication prescribed by a vet.
When Crying Signals Pain
This is the scenario most people are worried about, and it’s the one that matters most. Dogs in pain do vocalize, but they often hide discomfort rather than broadcasting it. A sudden yelp during movement, whimpering when being picked up, or groaning when lying down are more specific pain indicators than generalized whining.
Cornell University’s veterinary school identifies a checklist of signs that typically accompany pain-related crying:
- Limping or stiffness, especially favoring one leg
- Reluctance to move, including difficulty with stairs, getting up, or sitting down
- Restlessness, like pacing or inability to settle into a comfortable position
- Changes in posture, such as an arched back, low head, or abnormal tail position
- Reactions to touch, like flinching, snapping, or growling when a specific area is handled
- Excessive licking or chewing at one spot on the body
- Panting at rest, without heat or exercise as an explanation
- Loss of appetite or altered sleeping patterns
- House accidents in a dog that’s normally housetrained
A dog that’s crying AND showing one or more of these signs is likely in physical distress. The more of these behaviors you see together, the more urgent the situation. A single yelp when you accidentally step on a paw is nothing to worry about. Persistent whimpering combined with lethargy and refusal to eat is a different story entirely.
Why Your Dog’s Eyes Look Teary
If your dog’s “crying” is visible wetness or discharge around the eyes rather than vocalization, the cause is almost always physical. The medical term is epiphora, and it comes down to two basic problems: something is irritating the eye, or the tear drainage system isn’t working properly.
Common irritants include airborne allergies, dust, smog, trauma to the eye, infections, and corneal ulcers. Glaucoma, which involves painful pressure buildup inside the eye, also triggers excessive tearing. Even certain eyelid or eyelash abnormalities can cause chronic irritation that keeps the eyes watering.
Drainage problems are the other major cause. Dogs have a tear drainage system that channels tears from the eye into the nasal cavity. When this system is blocked, scarred from old infections, or anatomically too small, tears overflow and run down the face instead. Some dogs are born with closed tear ducts, a condition especially common in poodles and cocker spaniels that can be corrected surgically.
Flat-Faced Breeds and Chronic Tearing
If you have a pug, French bulldog, English bulldog, or another flat-faced breed, watery eyes may simply be part of life with your dog. These breeds have fundamentally different tear drainage anatomy. Research published in PLOS One found that the tear drainage canal in flat-faced dogs is 41 to 57 percent shorter than in dogs with normal skull shapes, while other parts of the drainage system are two to three times longer than they should be.
The entire drainage path is warped into an unnatural U- or V-shape (pugs have the most extreme distortion), and the canal has to travel at a much steeper angle to reach the nasal cavity. In many of these dogs, tears escape through an alternate opening into the back of the nasal cavity instead of draining normally. Their shallow eye sockets also mean tears overflow from the corners of the eyes because there simply isn’t enough space to contain them.
Chronic tear staining, those reddish-brown streaks beneath the eyes, is a cosmetic issue in these breeds rather than a medical emergency. But if the amount of staining increases, changes color, or your dog’s eyes become red and painful, that’s a new problem layered on top of the baseline.
Eye Discharge That Needs Veterinary Attention
Not all eye discharge is the same, and the color tells you a lot. Clear, watery discharge is the least concerning and often comes from mild irritation or allergies. White or gray mucus collecting around the eyes warrants a vet visit. Yellow or green discharge is the most serious, as it frequently signals an active eye infection.
Beyond color, watch for these red flags: your dog rubbing or pawing at their eyes, squinting, excessive blinking, sensitivity to light, or visible redness. A dog whose eyes are red and painful needs prompt attention. Eye infections can worsen quickly, and conditions like corneal ulcers or glaucoma can cause permanent damage if left untreated.
A good rule of thumb: if you can’t easily explain the tearing (it’s allergy season, they got dust in their eye, they’re a flat-faced breed with a known baseline), or if anything about the discharge looks different from normal, it’s worth having the eyes examined.