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Dr. Gabby
Dr. Gabby, Veterinarian
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While sleeping, my dog suddenly opens his eyes and starts screaming

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While sleeping, my dog suddenly opens his eyes and starts screaming (not howling). He sits up and howls for maybe 20 - 30 seconds. If my other dog come up, Baxter does see him and continues to scream. However, he will stop sooner.
As soon as he is done, he is overjoyed with relief and wants me to per him and hug him.
This is occurring more often ( 2-3 x a week). What is this and what can we do? He looks terrified when he wakes up. :(
Submitted: 1 year ago.
Category: Dog
Expert:  Dr. Gabby replied 1 year ago.
Hello and thank you for asking your question. My name isXXXXX will try to help.
The most likely cause is a sleep disorder. It is called a "rapid eye movement" disorder in dogs because that is the part of the sleep cycle in which the disorder occurs. When he wakes up howling, part of his brain is turned off so he does not know what he is doing. Dogs with this problem, can be very aggressive, and bite, when woken up so be careful.

During dreaming, the brain is electrically very active This includes the portion of the brain that controls movement. During this stage of sleep, a region in the brain stem actively paralyzes motor neurons to prevent that activity in the motor center from causing movement. The exception to this are the motor neurons that control breathing and eye movements. That's why you see the rapid eye movement (REM) during certain stages of sleep. In some patients, this active paralysis of motor neurons fails. This results in excessive, sometimes violent motor activity during dreaming. In some cases this is associated with vocalizations such as growling and even biting/attacking movements. The dog is basically acting out his dreams.
The main risk is the dog hurts themselves or hurts anyone or anybody nearby. Management consists of having the dog sleep in a confined, well-padded area, such as a crate to prevent any injury.

There are two medications, clonazepam and bromide, that can be used to treat it. Your vet can prescribe those medications for you.

Seizure activity can cause this type of behavior as well.

If it is seizure activity, you can not wake the dog up during a seizure.

If you google "REM sleep disorder" you can see some videos, on YouTube, of dogs and people with this problem which may help you tell the difference.

You will need to video tape a couple of episodes so your vet can see what is going on and to help your determine the cause as well as a treatment.

Your vet will want to do blood work, and a urinalysis, to make sure there is not an underlying medical cause as well.There is also a possibility it is due to pain. But if that is the case, I would think he would show signs, or symptoms, of pain when he is awake as well.

I hope this helps.

If you have additional questions, please click "reply."

Customer: replied 1 year ago.
Great information. Just one follow up question: is the "Rapid Eye Movement Disorder" similar to when humans experience sleepwalking? I believe this sounds a bit silly. I believe this is the correct diagnosis for Baxter. He just has his own version of reaction. He is able to sit up and look around when our other dog approaches him. He even turned the screaming into howling when our other dog started howling at him.

This is valuable information and a great relief! Thank you so much.
Expert:  Dr. Gabby replied 1 year ago.
: ) You are right on. It is the same disorder as "sleep walking" and "night terrors."
Dr. Gabby, Veterinarian
Category: Dog
Satisfied Customers: 9192
Experience: DVM for 15 years. Compassionate, Caring, Experienced.
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