# Foods Toxic to Dogs: What's Dangerous and What to Do **URL:** \ **Category:** Dog Health and Care\ **Tags:** featured\ **Created:** [October 7, 2026, 2:10am UTC](https://forum.oscillotamerica.com/t/foods-toxic-to-dogs-whats-dangerous-and-what-to-do/3692 "2026-10-07T02:10:20Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![CatLady6](https://forum.oscillotamerica.com/user_avatar/forum.oscillotamerica.com/catlady6/32/597_2.png) [@CatLady6](https://forum.oscillotamerica.com/u/CatLady6)\ **Post date:** [October 7, 2026, 2:10am UTC](https://forum.oscillotamerica.com/t/foods-toxic-to-dogs-whats-dangerous-and-what-to-do/3692/1 "2026-10-07T02:10:21Z")
![Foods Toxic to Dogs: What's Dangerous and What to Do](https://forum.oscillotamerica.com/uploads/default/original/2X/6/645a471b4b440f83e99ce31b95f407afdfdbd218.jpeg) The foods most likely to seriously hurt a dog are chocolate, grapes and raisins, xylitol (a sweetener in sugar-free gum and some peanut butters), onions and garlic, and macadamia nuts. If your dog has just eaten any of them, don’t wait for symptoms — call your vet or a pet poison hotline now. Some of these cause kidney or liver damage that doesn’t show up until it’s hard to reverse. **Pet poison hotlines (US, 24/7, a consultation fee usually applies):** - ASPCA Animal Poison Control Center: (888) 426-4435 - Pet Poison Helpline: (855) 764-7661 ## Which Human Foods Are Toxic to Dogs? Below are the foods vets see most often in poisoning cases, roughly in order of how much trouble they cause. Dose figures come from the _Merck Veterinary Manual_ and veterinary toxicology literature, and they’re guides, not guarantees — individual dogs vary. ### Chocolate Chocolate contains theobromine and caffeine, which dogs clear from their bodies far more slowly than people do. Signs include vomiting, restlessness, a racing heart, tremors and, at higher doses, seizures. The darker the chocolate, the more dangerous it is. Baking chocolate and cocoa powder are the worst; milk chocolate is much lower; white chocolate contains very little theobromine (though the fat can still upset the stomach). As a rough guide from the Merck manual, mild signs appear at around 20 mg of theobromine per kg of body weight, heart effects at around 40–50 mg/kg, and seizures at 60 mg/kg and above. In practice: a large Labrador who steals one milk chocolate bar may just get an upset stomach. A small terrier who eats a square of baking chocolate needs a vet. Your vet or a poison hotline can calculate the risk if you tell them the dog’s weight, the type of chocolate and roughly how much. ### Grapes, raisins, sultanas and currants These can cause sudden kidney failure. There’s no known safe amount — some dogs eat a handful with no effect, while others have gone into kidney failure after a few. Researchers at the ASPCA Animal Poison Control Center have proposed tartaric acid as the likely toxic compound (Wegenast et al., _Journal of Veterinary Emergency and Critical Care_, 2022), which may explain why the risk varies so much between batches of grapes. That finding is still being confirmed. Because there’s no way to predict which dogs will react, vets treat any grape or raisin ingestion as an emergency. Watch out for hidden sources: trail mix, fruit cake, hot cross buns, granola bars. ### Xylitol (birch sugar) Xylitol is a sugar substitute found in sugar-free gum and mints, some peanut butters, sugar-free baked goods, toothpaste and some vitamins. In dogs it triggers a large release of insulin, causing a dangerous drop in blood sugar within 10–60 minutes. Signs include weakness, wobbling, collapse and seizures. Larger doses can cause liver failure. Very small amounts are dangerous. Merck lists hypoglycemia from roughly 0.1 g/kg and liver damage from roughly 0.5 g/kg. A few pieces of some sugar-free gums can be enough to poison a small dog. **Check the label of any peanut butter before using it as a treat.** ### Onions, garlic, leeks and chives These all belong to the _Allium_ family. They damage red blood cells and can cause anemia. Cooked, raw, powdered and dehydrated forms are all toxic — onion powder in gravy, baby food or seasoned meat counts. Signs often take a few days to appear: lethargy, pale gums, fast breathing, reddish urine. A single large meal or small amounts eaten repeatedly can cause problems. Japanese breeds such as Akitas and Shiba Inus appear to be more sensitive. ### Macadamia nuts These cause weakness (especially in the back legs), vomiting, tremors and a high temperature, usually within 12 hours. It’s rarely fatal and dogs typically recover in a day or two with supportive care, but it’s frightening to see and worth a call to your vet. Chocolate-covered macadamias are a double problem. ### Other foods to keep away from dogs - **Alcohol** — even small amounts can cause vomiting, wobbliness, low blood sugar and, in serious cases, breathing problems. Raw bread dough ferments in the stomach, producing alcohol _and_ expanding. Dough ingestion is an emergency. - **Caffeine** — coffee grounds, tea bags, energy drinks and caffeine pills act much like chocolate. - **Fatty foods** — bacon, turkey skin, fat trimmings and greasy leftovers can trigger pancreatitis, which can be severe and painful. - **Cooked bones** — they splinter and can cause choking, broken teeth, or blockages and tears in the gut. - **Moldy food** — moldy food from the trash or compost can contain toxins that cause tremors and seizures. - **Corn cobs, peach pits and avocado pits** — not usually poisonous, but a common cause of intestinal blockages that may need surgery. ## What Should I Do if My Dog Ate Something Toxic? 1. **Get the dog away from the food** and remove anything left over. 2. **Work out what and how much.** Keep the packaging. Estimate the amount and note the time. 3. **Call your vet, an emergency clinic, or a poison hotline right away** — before symptoms start. Many of these poisonings are much easier and cheaper to treat early. 4. **Don’t make your dog vomit unless a vet tells you to.** Hydrogen peroxide can cause stomach ulcers and aspiration pneumonia, and making a dog vomit is the wrong move for some substances. If vomiting is needed, a vet clinic can do it more safely and effectively. 5. **Bring the packaging** to the clinic. The ingredient list (especially for xylitol and chocolate type) changes the treatment plan. ## When to See a Vet Go to a vet or emergency clinic immediately if your dog: - Has eaten grapes, raisins, xylitol, raw bread dough or dark/baking chocolate — even if they seem fine - Is vomiting repeatedly, weak, wobbly or collapsing - Is trembling, [shaking](https://forum.oscillotamerica.com/t/3672) or having a [seizure](https://forum.oscillotamerica.com/t/3636) - Has pale gums, fast breathing or red-brown urine - Has a swollen, tight belly or is retching without bringing anything up — this can also be [bloat](https://forum.oscillotamerica.com/t/3586), which is a separate emergency For a mild upset after a fatty snack — one episode of [vomiting](https://forum.oscillotamerica.com/t/3532) or soft stool in an otherwise bright dog — calling your vet for advice is reasonable rather than rushing in. Our guide to [dog diarrhea](https://forum.oscillotamerica.com/t/3644) covers what to watch for. ## Which Human Foods Are Safe for Dogs? Plenty of everyday foods are fine as treats, served plain and in small amounts: - Plain cooked chicken, turkey or lean beef (no bones, skin or seasoning) - Carrots, green beans, cucumber - Apple slices (no core or seeds) and blueberries - Plain canned pumpkin (not pie filling) - Plain cooked rice or oatmeal - Xylitol-free peanut butter A common vet rule of thumb, supported by WSAVA nutrition guidance, is to keep treats and extras to about 10% of your dog’s daily calories, so their complete diet stays balanced. If you’re not sure how your dog’s main food measures up, see [how to read a dog food label](https://forum.oscillotamerica.com/t/3348). ## How to Dog-Proof Your Kitchen Most poisonings happen through ordinary access: bags on the floor, a counter surfer, or a guest’s handbag with gum inside. Simple fixes go a long way: - Keep handbags, backpacks and coats off the floor and out of reach - Use a lidded or locked trash can - Store chocolate, raisins and nuts in high cupboards, not on counters - Tell guests and kids not to share food from the table - Take extra care around holidays — Easter, Halloween and Christmas bring more chocolate and baked goods into the house If you live with cats as well, their list is different in places — our guide to [human foods that are safe for cats](https://forum.oscillotamerica.com/t/3443) covers their side of the kitchen.