My Dog is Throwing Up Clear Mucus – Top 3 Reasons Why

Disclaimer: The content on is for informational purpose only. It is not intended to be a substitute for professional veterinarian advice, diagnosis, or treatment. Always seek the advice of a veterinarian when in doubt.

Have you been in a situation where your dog has thrown up clear mucus and you have no idea what to do? There are a few different reasons why your dog is doing this and it could be a sign of something more serious. It’s important to know what to do and what caused this issue so that you can treat it before it becomes an even bigger problem.

1. Your Dog Has Stomach Issues

Various stomach issues could be causing your dog to throw up clear mucus. If you have a puppy that gets really active after eating, it could be an upset stomach from too much activity occurring too quickly. Car rides and other situations could also make your dog nauseous. Motion sickness, eating too quickly, and other stomach issues happen to dogs just like they do to people.

With your vet’s approval, take away food and water for a few hours to give your dog’s digestive system time to calm down and then give a little bit of food and water later on. If the issue has cleared up after a few hours, it could have just been an upset stomach. If the vomiting gets worse or changes in a matter of a few hours, then you should seek out additional veterinary assistance.

2. Your Dog Ate Something Bad or Irritating

Your dog might have eaten something that is just irritating and this could be causing the clear mucus vomit. Something that is bad or irritating to your dog could have been the result of him eating things from the trash or from the table. If your dog only vomits once or twice and then seems to be better afterward, then you might assume it was just something dietary related.

3. Your Dog has Water Intoxication

If your dog has been throwing up a lot of clear mucus this could also indicate water intoxication. This happens when your dog has ingested too much water. If there is too much water inside of your dog then sodium levels could end up dangerously low. We need a certain amount of sodium to control bodily functions such as blood pressure. Dogs that are swimming in water, intentionally or not, are most at risk for water intoxication.

Signs of water intoxication include nausea, bloating, staggering, excessively salivating, dilated pupils, vomiting, and light colored gums. Seizures, coma, collapsing, and even death are also possible in the more severe situations. Water intoxication can impact any size or breed of dog, but smaller dogs show symptoms quicker. Water intoxication is considered life-threatening so you want to seek out veterinary care immediately if you know this has happened.

What to Do if Dog Vomits Frequently

If your dog has been vomiting frequently, the best course of action is to call your veterinarian and make an appointment as quick as you can. There could be a serious reason for the frequent vomiting such as an obstruction in the intestines or a foreign body. Blockages of any kind could be life-threatening so call the veterinarian to see what the next step should be.

There are some things you can do to help prevent your dog from experiencing vomiting mucus. You should remove any toys or other objects that have been chewed up or that have been broken. You also want to keep lawn and garden products, cleaning solutions, trash, food, and other items away from your dog at all times because these are often toxic to pets. Removing all types of toxic food items is a preventative measure as well. This includes grapes, onions, avocados, and chocolate. Only give your dog high-quality foods that are designed specifically for dogs.


  • Eli Richardson | 27/08/2019

    Last night, I saw my neighbor’s dog vomiting clear mucus, and I wanted to know what is causing it. It was shocking when you said that this could be because of water intoxication. With that set, I will let my neighbor know so he can take his dog to a vet.

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