By Dial A Vet Veterinary Team
Last updated: 9 November 2026
Takeaway noodles in a foil tray are hard for a cat to resist, especially when the container is left open on the couch. A couple of plain noodle strands are not going to poison a healthy cat. A forkful of saucy chow mein is a different thing, because dishes like this are typically seasoned with soy sauce and oil and may include onion, garlic and other aromatics. We could not confirm the exact Panda Express recipe from the company's website, so treat this post as general guidance and go by the ingredient list the restaurant gives you.
Key takeaways
- Plain cooked noodles are low risk in a tiny amount. The sauce, oil and aromatics in takeaway chow mein are the concern.
- Onion and garlic are poisonous to cats. Merck Veterinary Manual states that cats are the most susceptible species, and signs can take a few days to show.
- Salt overload can cause vomiting, diarrhoea, tremors, seizures and collapse in pets.
- Fatty foods can cause vomiting and diarrhoea, and potentially pancreatitis in some pets.
- Related: soy sauce, pasta, onions.
Noodles are not the problem
Plain cooked noodles are made from flour and water, and a strand or two will pass without trouble in most cats. But cats are obligate carnivores, according to the RSPCA Australia knowledgebase, and they do not use plant foods the way other animals do. Noodles add calories and little else, and VCA reports that obesity is the most common preventable disease in cats in North America.
What takes it from noodles to a risk
Dishes of this style are usually stir-fried in oil with soy sauce and a mix of vegetables. Many recipes include onion, and some include garlic or other seasonings. Check the restaurant's published ingredient list or ask the staff.
- Onion and garlic. Merck Veterinary Manual says Allium poisoning affects dogs and cats who eat raw, cooked, dehydrated or powdered garlic and onion, with Heinz body haemolytic anaemia that develops a few days after eating. Pet Poison Helpline likewise notes that cats are more sensitive to Alliums. Weakness, pale gums and dark urine can appear after the meal has been forgotten.
- Soy sauce and salt. The ASPCA notes that excessive salt can cause increased thirst and urination, and in higher amounts vomiting, diarrhoea, depression, tremors and seizures. A forkful of salty noodles is a bigger salt hit for a cat than for a person.
- Oil. The ASPCA lists fatty foods among those that can cause vomiting, diarrhoea and potentially pancreatitis in some pets. VCA describes the signs of pancreatitis in cats as decreased appetite, nausea, vomiting, lethargy, diarrhoea, weight loss and abdominal pain.
- Sweet sauces. Some takeaway sauces contain sugar or sweeteners. Check for xylitol on any packet your cat might reach, because Pet Poison Helpline lists it as toxic to dogs.
Signs to watch for
- Vomiting or diarrhoea
- Strong thirst and frequent urination
- Lethargy, hiding or a hunched posture
- Reduced appetite
- Tremors, stumbling or twitching (salt)
- Over the next few days: weakness, pale gums, fast breathing, dark urine (onion or garlic)
What to do if your cat ate chow mein
- Check what was eaten and roughly how much. Was it just noodles, or noodles with sauce and vegetables?
- Look at the ingredient list if you have one, and check for onion, garlic and sweeteners.
- Offer fresh water. Do not make your cat vomit, and never use salt to do it. Pet Poison Helpline warns that salt and salt water can cause salt poisoning.
- For a strand or two of plain noodle, watch for a day.
- For anything more, or any sauce, call your vet or the Animal Poisons Helpline on 1300 869 738.
When to see a vet urgently
Go to a vet clinic if your cat is vomiting repeatedly, tremoring, wobbly, collapsed, having seizures, or has a swollen painful belly. Seek care if your cat becomes weak or pale in the days after eating a dish containing onion or garlic. VCA advises veterinary care if vomiting comes with fever, lethargy, loss of appetite, abdominal pain, diarrhoea, dehydration or blood.
Takeaway night with cats around
- Close the container lids and place leftovers in the fridge straight away.
- Keep plates out of reach while you eat.
- Do not share sauce sachets or noodle broth.
- Choose a cat treat from the pantry for any begging. VCA suggests treats make up no more than 10 percent of daily calories, and Cornell's rule of thumb is 10 to 15 percent.
FAQ
Can I give my cat plain boiled noodles?
A tiny piece is low risk, but it adds nothing for a carnivore. See our pasta post for more detail.
My cat licked the sauce. Is that dangerous?
A lick is unlikely to cause serious harm, but sauces are salty and may contain garlic or onion. Offer water and watch for signs.
How long until garlic or onion poisoning shows?
Merck says clinical signs of anaemia may take a few days to appear after exposure, which is why a call to your vet matters even when your cat looks well.
Is chicken from the dish safe?
Plain chicken is fine, but chicken in sauce carries the same seasoning issues. Skip it.
Talk with a vet
If your cat ate saucy takeaway noodles, or you are worried about onion, garlic or salt, book a video consult with Dial A Vet's real vets and vet nurses. We help with dogs and cats, with same-day and extended hours. Book a Dial A Vet consult.
References
- Merck Veterinary Manual. Garlic and Onion (Allium spp) Toxicosis in Animals.
- Pet Poison Helpline. Garlic Is Toxic To Dogs.
- Pet Poison Helpline. Salt Is Toxic To Pets.
- ASPCA. People Foods to Avoid Feeding Your Pets.
- VCA Animal Hospitals. Pancreatitis in Cats: Symptoms & Treatment.
- RSPCA Australia Knowledgebase. Do cats have special nutritional requirements?.
- VCA Animal Hospitals. Obesity in Cats.
- Pet Poison Helpline. Xylitol Is Toxic To Dogs.
- Cornell Feline Health Center. Feeding Your Cat.
- VCA Animal Hospitals. Vomiting in Cats.
Disclaimer: Educational only. This page does not replace an examination or advice from your own veterinarian. If you are worried about your pet right now, contact your local vet or nearest emergency vet clinic.