The brown liquid vomited by the cat may be food that has not been fully digested in the stomach, or it may be brown liquid caused by stomach bleeding for some reasons. Cat's digestive juice is usually white mucus or yellow or light yellow mucus. If the color of the spitted liquid is abnormal, you need to observe whether the cat's mental state is abnormal, and if there is any abnormality, seek medical treatment in time.

Causes vomiting brown liquid:

1. It may be that the cat has not fully digested the food it has eaten, resulting in gastrointestinal indigestion and vomiting. food.

2. It is also possible that the cat licks its fur too much, causing a lot of hair to accumulate in the stomach, causing hairballs and vomiting of brown liquid.

3. It is also possible that the dog is suffering from digestive system diseases, such as upper respiratory tract infection or gastroenteritis and other gastrointestinal diseases, which may cause gastrointestinal irritation and bleeding, and vomiting of brown liquid.