TL;DR: While cats often vomit grass to aid digestion, it can indicate a medical emergency if they appear lethargic or have ingested toxic plants like lilies or sago palms. Taking photos of the vomit and the plant helps your vet provide a faster diagnosis.
What does it mean if my cat is vomiting up green plant material?
Finding green plant material in your cat's vomit usually means your pet has been grazing on grass or household plants. While cats are obligate carnivores, they often ingest greenery to help settle their stomachs or to provide extra fiber to help move hairballs through their digestive tract. However, it can also indicate that your cat has ingested a potentially toxic houseplant.
Is it an emergency if my cat vomits plants and how urgent is the situation?
- This situation is classified as a medium urgency level.
- If your cat vomits once after eating common grass and continues to act normally, it may not be a crisis.
- Vomiting becomes urgent if it is frequent, if your cat appears lethargic, or if you suspect they have eaten a toxic plant like a lily, sago palm, or azalea.
- In these cases, immediate veterinary consultation is necessary to prevent internal damage.
Why should I take a photo of the vomit and plants for the vet?
- Take a clear photo of the vomit and any plants you suspect your cat might have chewed on.
- Photos are vital for triage because they help the veterinary team identify the specific plant species.
- A visual allows the vet to check for the presence of blood or excessive bile.
- Knowing exactly what was ingested allows the vet to provide a faster diagnosis and more accurate treatment plan.
Clinical Context (Merck Veterinary Manual)
When a cat vomits green plant material, initial assessment should focus on identifying potential gastrointestinal irritation. Plant ingestion can cause a range of clinical signs, including anorexia, diarrhea, excessive salivation, and dyspnea, stemming from local irritation to mucous membranes. Specific plant components such as calcium oxalate crystals, saponins, acrid volatile oils, plumericin, and anthraquinone glycosides can induce these effects. Treatment is largely symptomatic and supportive, addressing dehydration and electrolyte imbalances as needed, particularly in severe cases characterized by significant diarrhea or hypoglycemia.
Chapter: Toxicology, Gastroenterology, Emergency
Source: The Merck Veterinary Manual, 11th Edition (Page 3109)