By Dial A Vet Veterinary Team
Most bread a cat steals is a plain crust, and a plain crust is not dangerous. A few breads are a different story. Raw yeast dough rising on the bench, a foil parcel of garlic bread, and a loaf studded with sultanas are the ones vets worry about. If your cat has got into one of these, this guide explains why it matters and what to do next.
Key takeaways
- Raw yeast dough is the most urgent bread risk. It can expand in the stomach and produce alcohol as the yeast ferments.
- Garlic bread, garlic butter and onion breads can damage a cat's red blood cells. Signs often take several days to appear.
- Fruit breads with raisins, sultanas or currants are on the RSPCA list of foods harmful to cats.
- Chocolate breads and nut breads add other risks.
- Call your vet or the Animal Poisons Helpline (1300 869 738) early. Do not wait for signs with dough or garlic bread.
- Related reading: onions and cats, grapes and cats.
Raw yeast dough
Raw dough is a true emergency risk. The ASPCA explains that yeast dough can rise and cause gas to build up in the digestive system, stretching the stomach painfully, and that the yeast also produces alcohol once the dough is swallowed. Pet Poison Helpline notes unbaked bread dough is dangerous to both dogs and cats. It lists vomiting, lethargy, staggering, weakness, a bloated belly, unproductive retching and coma among signs, and notes the alcohol can cause dangerous drops in blood sugar, blood pressure and body temperature.
Pizza dough, sourdough starter, bread maker mixes and dinner rolls left to prove all count. Cats rarely eat a large amount, but they are small, so even a modest piece matters.
Garlic bread and garlic butter
Garlic bread is usually a loaf soaked in butter mixed with garlic and herbs. Merck Veterinary Manual notes cats are the species most susceptible to garlic and onion poisoning, that garlic is three to five times more toxic than onion, and that toxicosis in cats has been reported after less than a teaspoon of cooked onion. Damage to red blood cells usually peaks a few days after eating, with haemolysis typically three to five days after exposure. That delay is why you should call your vet the same day, even if your cat seems perfectly well.
Garlic and herb breads, cheese and onion rolls, onion bagels and pizza bread fall in the same group. Garlic powder and dried onion are concentrated.
Fruit loaves and hot cross buns
Fruit loaf, raisin toast, panettone, hot cross buns and Christmas breads often contain raisins, sultanas or currants. The RSPCA lists all of these as harmful to cats.
The evidence in cats is limited. Pet Poison Helpline notes dogs are so far the only species positively identified as sensitive to grapes and raisins, and a 2022 study of 13 cats that ate grapes or raisins found two developed mostly stomach-related signs and none developed kidney injury. That is reassuring, but the study was small and the toxic dose is unknown, so vets still treat any exposure with caution.
Chocolate and nut breads
Chocolate brioche and chocolate chip loaves contain theobromine and caffeine. Merck notes signs of chocolate poisoning usually appear within 6 to 12 hours. Breads with macadamia or other nuts are also on the RSPCA harmful list.
Signs to watch for
Raw dough:
- a swollen, tight belly
- retching without bringing anything up
- wobbliness, weakness, unusual sleepiness
Garlic or onion bread, in the days after:
- tiredness, reduced appetite
- pale or yellow gums
- fast breathing
- reddish brown urine
Fruit or chocolate bread:
- vomiting or diarrhoea
- restlessness, tremors or a racing heart (chocolate)
When it is an emergency
Treat these as urgent and call your vet or emergency clinic now if your cat:
- ate any raw yeast dough
- ate garlic bread, garlic butter or onion bread
- ate fruit bread or buns with raisins, sultanas or currants
- has a bloated belly, wobbliness, tremors, seizures or collapse
Out of hours, the Animal Poisons Helpline (1300 869 738) can advise. Do not make your cat vomit at home. Salt and hydrogen peroxide are dangerous, and some products can cause more harm on the way back up.
How vets treat dangerous bread exposures
Your vet will ask what was eaten, roughly how much and when. If timing allows, they may empty the stomach in the clinic using medicines suitable for cats. With dough, they may monitor blood sugar, temperature and alertness, and give fluids and warming. With garlic or onion exposure, they may check red blood cells over several days and, in severe cases, give oxygen or a blood transfusion. Merck lists these as part of managing severe anaemia from onion or garlic. Your vet will tailor treatment to your cat.
Prevention
- Let dough prove inside a closed oven (turned off) or microwave, not on the bench.
- Wrap garlic bread and put it straight in the oven, then bin the foil.
- Store fruit loaves in a closed bread bin.
- Remind visitors not to share hot cross buns or Christmas bread.
FAQ
My cat licked a bit of raw pizza dough. Is that a problem?
A lick is a small amount, but dough can expand and produce alcohol. Call your vet or the Animal Poisons Helpline for advice.
Is baked garlic bread safer than raw garlic?
No. Cooked, dried and powdered garlic and onion can all cause poisoning in cats.
How long after eating garlic bread would my cat get sick?
Signs from red blood cell damage often take several days to appear, which is why early advice matters.
Is plain baked bread OK?
A small piece of plain baked bread is unlikely to harm a healthy cat, though it adds nothing to the diet.
Talk with a vet
If your cat has got into dough or garlic bread and you would like help deciding what to do, a Dial A Vet veterinarian can talk you through it. In an emergency, go straight to your nearest clinic. Book a Dial A Vet consult.
References
- ASPCA Animal Poison Control. People Foods to Avoid Feeding Your Pets.
- Pet Poison Helpline. Bread Dough.
- Merck Veterinary Manual. Garlic and Onion (Allium spp) Toxicosis in Animals.
- RSPCA Knowledgebase. What should I feed my cat?
- Pet Poison Helpline. Feline Safety.
- Dijkman MA, et al. Incidence of Vitis fruit-induced clinical signs and acute kidney injury in dogs and cats. Journal of Small Animal Practice. 2022;63(6):447-453.
- Merck Veterinary Manual. Chocolate Toxicosis in Animals.
- Animal Poisons Helpline (Australia, 1300 869 738). Animal Poisons Helpline: 24/7 Pet Poisoning Advice.
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 animal hospital.