The reasons why dogs vomit brown vomit:

1. It is very likely that the dog has eaten food that is not easy to digest and has not been fully digested in the stomach. Stomach bloating and vomiting.

2. The dog may have eaten a foreign object by mistake. For example: fish bones, glass fragments, etc., can scratch the gastrointestinal tract and cause gastrointestinal bleeding, causing the dog to vomit brown liquid.

3. It is also possible that the dog has other diseases that cause gastric bleeding, such as gastric tumors, gastritis, gastric ulcers, etc.

4. If the dog accidentally eats chemicals, such as phosphorus, arsenic, or rat poison, it will also cause the dog to vomit bloody vomit.

Emergency treatment methods for dogs vomiting brown vomit:

1. If the breeder finds that the dog has vomited brown vomit, he needs to eat and drink immediately. Avoid food and water entering the gastrointestinal tract to aggravate the vomiting reaction, and identify the cause.

2. If it is caused by accidentally eating spoiled food, the breeder can stop feeding this type of food and feed an appropriate amount of probiotics to regulate the gastrointestinal environment.

3. If it is caused by poisoning, the owner needs to let the dog drink a lot of water to speed up metabolism. If necessary, gastric lavage and enema can be used, and at the same time, symptomatic detoxification is required.

4. If it is a stomach disease, it needs to be treated with antibiotics, and stomach tumors also need to be removed in time.

5. If the dog accidentally eats a foreign object and scratches its stomach, the foreign object needs to be removed promptly through surgery.