Dog Died Suddenly After Vomiting? Possible Causes:
1. Internal Bleeding
2: Toxin Ingestion
3: Heart Problems
4: GDV: Bloat

Signs Your Dog May Be Dying
Overall, many dog parents who reported sudden deaths witnessed the following symptoms before the demise of their furry friends:
1: Extreme Fatigue
A vomiting dog will obviously have less energy and become less active even if the situation is not serious.
However, when a pet is actively dying, they will show signs of extreme fatigue.
Your pet will more likely pant and pace even at night and will most likely lie in one spot without attempting to get on his feet anymore, and he might no longer even have the energy to lift his head.
Again, extreme fatigue can be a slow decline and may be due to poor blood circulation, anemia, or lack of energy.
If your dog’s gums turn white instead of pink, it could be a sign of anemia, which is usually a serious sign of a dying dog.
Likewise, if the gums are pink but turn white and stay that way for several seconds when pressed with a finger, it is a sign of circulatory collapse, which is a common precursor to death.
2: Complete Loss of Appetite
If your dog shows practically zero interest in food or water and throws up whenever she eats anything, it could be a sign that death is drawing closer.
However, beware that a dog that is feeling unwell will not want to eat even their favorite meals.
So, treat loss of appetite as a sign of a bigger health problem that warrants a visit to the vet.
3: Lack of Coordination
A dying dog can become very unsteady on their feet and experience difficulty moving from one point to another.
Lack of coordination might be due to impaired brain function, physical weakness, or even a combination of both.
Weakness is often due to not eating, blood loss, or severe diarrhea.
However, a dog that suddenly becomes uncoordinated may still have a treatable condition, like an ear infection.
Be sure to consult your vet if in doubt.
4: Incontinence
A dying dog will progressively lose control over bodily functions or become too weak to get up.
They may even have accidents where they lie.
As the body weakens, the pup can lose control of his sphincter muscle and the muscles that control bladder and bowel functions.
Good nursing is crucial at this point so that the pet doesn’t develop sores secondary to feces or urine remaining in prolonged contact with the skin.
5: Lack of Interest in Surroundings
Most dogs often begin to withdraw into their own worlds as they draw closer to death.
The pup will no longer respond to things going on around them, and they may even cease responding to their favorite human friends as their bodies begin to shut down.

6: Severe Vomiting
Vomiting is a general symptom of ailment or infection in dogs.
Has your dog died suddenly after vomiting?
It can occur due to a myriad of issues, including blood loss, an infection or virus, or a serious illness such as cancer.
If the dog has a terminal diagnosis, the digestive system may begin shutting down, causing the undigested food in the stomach to trigger nausea.
The dog may vomit to purge the contents of their stomach.
Severe vomiting is often a serious complication since your pup may not keep water down and become extremely dehydrated.
7: Twitching
A dying dog may twitch or shake at times.
Twitching is typically an involuntary muscle response, and the pet may become chilled as her body temperature begins to drop.
Strive to make the dog more comfortable by placing her on a heating pad or covering her with extra blankets.
8: Terminal Illness Worsening
If your pooch has been diagnosed with a terminal ailment like kidney failure, cancer, or heart failure, then you should be alert for any signs of deterioration in his condition.
For instance, a dog with heart failure may develop more labored breathing and a swollen belly.
Final Thoughts
Note that the signs we have listed here are quite general and, when monitored in isolation, might simply suggest that your dog is sick and needs medical attention.
If your dog died suddenly after vomiting, hopefully this article has given you some insight into what may have caused it.
Always look at the bigger picture, such as the overall health of your dog.
If a dog with a terminal diagnosis exhibits pale gums and refuses to eat for days, he is more likely dying.
On the flip side, a fit young dog with no pre-existing health conditions should quickly recover from any ailment provided you seek immediate medical attention.
Ultimately, your best source of advice is the veterinarian familiar with your pooch’s case.
They can offer professional advice on whether there are viable treatment options that would make your fluffy companion well again or more comfortable.