Seeing your dog sleep with their eyes partly open can look strange. It may seem like your dog is staring, half awake, or uncomfortable. In many cases, this is normal, especially if your dog wakes easily and acts normal afterward.
Quick answer: dogs can sometimes appear to sleep with their eyes open because of light sleep, REM sleep, visible third eyelid, facial structure, or loose eyelids. Some short-faced, droopy-eyed, or prominent-eyed breeds may show this more often.
Still, eye symptoms should not be ignored. If your dog has redness, discharge, squinting, cloudiness, pain, heavy twitching, confusion, or sudden behaviour changes, contact a veterinarian.
Can dogs sleep with their eyes open?
Yes, dogs can sometimes appear to sleep with their eyes open or partly open. This does not always mean their actual eye surface is fully exposed. Sometimes the pale third eyelid, also called the nictitating membrane, moves across the eye and makes it look like the dog’s eyes are open.
Dogs also move through different sleep stages. During REM sleep, you may see twitching, paw movement, little sounds, irregular breathing, or eye movement. This can look odd, but it is often part of normal sleep.
Why does my dog sleep with his eyes open?
Common reasons include light sleep, REM sleep, a visible third eyelid, breed-related eyelid shape, loose eyelids, prominent eyes, or simple habit. Some dogs have facial features that make full eyelid closure less obvious when they rest.
Less commonly, a dog may have an eye condition, nerve problem, seizure-like episode, or sleep disorder. The difference is usually in the surrounding symptoms. A peaceful dog that wakes normally is less concerning than a dog with red eyes, pain, disorientation, or unusual movements.
Dog breeds that may sleep with their eyes open
Some breeds are more likely to appear this way because of their facial structure, loose skin, droopy eyelids, or prominent eyes. This does not mean every dog in these breeds will do it, but owners may notice it more often.
1. Bloodhound
Bloodhounds have loose facial skin and droopy lower eyelids. This can make their eyes look partly open even when they are resting. Because droopy eyelids can also collect irritation, owners should watch for redness, discharge, or frequent rubbing.
2. Basset Hound
Basset Hounds are another droopy-eyed breed. Their long eyelids and loose facial skin may make sleep look unusual. If your Basset’s eyes look irritated or watery, schedule a vet check.
3. Cocker Spaniel
Cocker Spaniels can be prone to eyelid problems such as ectropion or entropion. If a Cocker Spaniel regularly sleeps with eyes partly open and also has eye discharge, squinting, or redness, it is worth asking a vet to check the eyelids.
4. Saint Bernard
Saint Bernards have heavy facial features and can have droopy lower eyelids. This may make the eye look more exposed while resting. Regular eye checks are helpful for large droopy-eyed breeds.
5. Bulldogs and French Bulldogs
Flat-faced breeds such as English Bulldogs and French Bulldogs may have more prominent eyes and eyelid closure issues. If their eyes look dry, red, cloudy, or painful, contact a veterinarian because eye problems can become serious quickly.
| Breed type | Why it may happen | What to watch for |
|---|---|---|
| Short-faced breeds | Prominent eyes or facial structure | Dryness, redness, squinting, discharge |
| Droopy-eyed breeds | Loose eyelids may make eyes look partly open | Irritation, tearing, eyelid problems |
| Senior dogs | Sleep changes or eye changes with age | Cloudiness, confusion, sudden behaviour changes |
| Any breed | REM sleep, twitching, or third eyelid visibility | Pain, severe twitching, seizure-like signs |
When should you worry?
Contact a vet if your dog sleeping with eyes open is new, happens with eye redness, yellow or green discharge, squinting, pawing at the eye, cloudiness, swelling, signs of pain, confusion after waking, collapse, or violent movements during sleep.
If you are unsure whether your dog is dreaming or having a medical issue, take a short video and show it to your vet.
What should you do at home?
Do not force your dog’s eyes closed. Do not use human eye drops unless your veterinarian tells you to. Keep the sleeping area calm, watch for symptoms, and note how often it happens. If your dog wakes normally and seems comfortable, it may simply be a harmless sleep habit.
Final thoughts
Dogs can sleep with their eyes partly open, and it is often normal. Breed shape, third eyelid movement, and REM sleep can all make it look unusual. The key is to watch your dog’s comfort and eye health. If symptoms appear or the behavior changes suddenly, get veterinary advice.
FAQs About Dogs Sleeping With Their Eyes Open
Is it normal for dogs to sleep with their eyes open?
It can be normal if the dog is relaxed, wakes normally, and has no eye redness, pain, discharge, or unusual behaviour.
What dog breeds sleep with their eyes open?
It can happen in any breed, but it may be more noticeable in short-faced, prominent-eyed, or droopy-eyed breeds.
Why does my dog’s third eyelid show while sleeping?
The third eyelid may partly cover the eye during sleep, making it look like the eye is open or cloudy.
When should I call a vet?
Call a vet if your dog has redness, discharge, squinting, cloudiness, pain, heavy twitching, confusion, or sudden behaviour changes.
Can sleeping with eyes open dry out my dog’s eyes?
If the eye surface is exposed often, dryness or irritation may happen. Ask your vet if you notice redness, rubbing, or frequent discharge.
