--- title: "Foods Poisonous to Dogs: The Act-Fast List | Fluffs York" description: Foods poisonous to dogs, from chocolate and grapes to xylitol and onions. A York groomer's clear list, warning signs, and what to do fast in an emergency. --- [![Untitled (400 x 400 px) (250 x 100 px) (1)](https://www.fluffsyork.co.uk/hubfs/Untitled%20(400%20x%20400%20px)%20(250%20x%20100%20px)%20(1).png)](https://www.fluffsyork.co.uk) - [About](https://www.fluffsyork.co.uk/about) - Pricing & Packages - [Full Dog Groom](https://www.fluffsyork.co.uk/dog-grooming-prices-and-packages-in-york) - [Hand Stripping](https://www.fluffsyork.co.uk/hand-stripping-in-york) - [Puppy Grooming](https://www.fluffsyork.co.uk/puppy-grooming-in-york) - [Wash, Dry & Deshed](https://www.fluffsyork.co.uk/dog-deshedding-prices-in-york) - [Nail Clipping](https://www.fluffsyork.co.uk/dog-nail-clipping-cost-in-york) - [Gallery](https://www.fluffsyork.co.uk/dog-grooming-gallery) - [Reviews](https://www.fluffsyork.co.uk/customer-reviews-fluffs-dog-grooming-york) - Resources - [FAQs](https://www.fluffsyork.co.uk/faqs) - [Blog](https://www.fluffsyork.co.uk/dog-grooming-tips-and-tricks) - [Contact](https://www.fluffsyork.co.uk/contact-fluffs) Dog Nutrition # Foods Poisonous to Dogs: A Groomer's Act-Fast Guide Foods poisonous to dogs, from chocolate and grapes to xylitol and onions. A York groomer's clear list, warning signs, and what to do fast in an emergency. [Lucy](https://www.fluffsyork.co.uk/dog-grooming-tips-and-tricks/author/lucy) Apr 9, 2026 --- Some everyday foods are genuinely dangerous for dogs, and the ones to keep well out of reach are chocolate, grapes and raisins, onion and garlic, the sweetener xylitol, macadamia nuts, alcohol and caffeine. If your dog eats any of these, the safest thing you can do is act fast: don't wait to see if symptoms appear, ring your vet or the Animal PoisonLine for advice straight away. This guide runs through the main culprits and what to watch for. I'm a groomer, not a vet, but food safety comes up constantly with the owners I see here in York, usually after a dog has hoovered up something off the floor. It's worth knowing the big hitters so you can react quickly rather than panic. ## The main foods poisonous to dogs Keep these firmly out of reach, and remember they often hide inside other foods: - **Chocolate:** contains [theobromine](https://en.wikipedia.org/wiki/Theobromine_poisoning), which dogs process far more slowly than we do. Dark and cooking chocolate are the most dangerous. - **Grapes, raisins, sultanas and currants:** can cause sudden [kidney failure](https://en.wikipedia.org/wiki/Grape_and_raisin_toxicity_in_dogs), even in small amounts. Watch for fruit cake, mince pies and hot cross buns. - **Onion, garlic, leeks and chives:** the allium family damages red blood cells. Cooked, raw and powdered forms all count, so beware gravy and leftovers. - **Xylitol:** an artificial sweetener in some sugar-free gum, sweets, peanut butter and baking. Even a little can be extremely dangerous. See the [xylitol](https://en.wikipedia.org/wiki/Xylitol) page for how widely it's used. - **Macadamia nuts:** cause weakness, tremors and vomiting in dogs. - **Alcohol:** far more toxic to dogs than to people, and found in some unexpected places like unbaked dough. - **Caffeine:** in tea, coffee, energy drinks and coffee grounds. It affects dogs the same way chocolate does. Vets Now has a thorough overview of [foods poisonous to dogs](https://www.vets-now.com/pet-care-advice/foods-poisonous-to-dogs/) if you want to read further. ## Warning signs to watch for Symptoms vary depending on what and how much a dog has eaten, but common ones include: - Vomiting or diarrhoea - Drooling, or seeming unusually restless or wobbly - Tremors, twitching or seizures - Weakness, collapse or unusual tiredness - Excessive thirst or changes in toileting Signs can take hours to show, which is exactly why waiting is risky. If you know your dog has eaten something on this list, act before symptoms start. > **> Vet note:** Never try to make your dog sick yourself unless a vet has told you to. With some poisons it does more harm than good. Let the professionals guide you on the right next step. ## Act fast: what to do If you suspect your dog has eaten something poisonous: 1. **Take the food away** and stop your dog eating any more. 2. **Note what it was, how much, and when.** Keep any packaging. 3. **Ring your vet straight away**, or your nearest out-of-hours clinic. 4. **Or call the Animal PoisonLine on 01202 509000.** This is a paid UK service (roughly £35 to £45 per call) staffed by specialists who can tell you whether your dog needs to be seen. 5. **Stay calm and follow their advice.** Get to the vet quickly if they say so. You can find out more about the service at [Animal PoisonLine](https://www.animalpoisonline.co.uk/). ## Prevention is the easy win Most cases I hear about come down to opportunity: a bag left within reach, a dropped square of chocolate, a handbag with sugar-free gum in it. A few habits help enormously: - Store chocolate, sweets, nuts and dried fruit in closed cupboards. - Keep bins secure and food off low tables and countertops. - Tell visitors and children not to share human snacks. - Be extra careful at Christmas and Easter, when the risky foods are everywhere. ## Frequently asked questions **What are the most common foods poisonous to dogs?** Chocolate, grapes and raisins, onion and garlic, xylitol, macadamia nuts, alcohol and caffeine are the main ones. Many hide inside other foods like cakes, sauces and sugar-free products. **How quickly do poisonous foods affect dogs?** It varies. Some signs appear within an hour or two, others take much longer. That's why you should get advice as soon as you know your dog has eaten something, rather than waiting for symptoms. **Should I make my dog vomit?** No, not unless a vet has specifically told you to. With some substances it can cause more harm. Always call your vet or the Animal PoisonLine first. **Is a tiny amount of chocolate really a problem?** It depends on the type and your dog's size. Dark and cooking chocolate are the most dangerous. If in doubt, treat it seriously and ring your vet for advice. ## This isn't veterinary advice We're professional dog groomers, not vets, so please treat this as friendly general guidance. If you're worried about your dog, or before acting on anything here, speak to your local vet. In an emergency, contact your vet or nearest out-of-hours clinic. --- *Fluffs is a professional dog grooming salon in Wigginton, York, offering one-to-one grooming for dogs of every breed and coat type across Haxby, Strensall, Huntington, New Earswick and the surrounding villages. A safe home and a healthy diet keep your dog feeling their best between grooms. [Book their next groom.](https://www.fluffsyork.co.uk/contact-fluffs)* [Dog Nutrition](https://www.fluffsyork.co.uk/dog-grooming-tips-and-tricks/tag/dog-nutrition) ## Similar posts Dog Health ### [Dog Skin Allergies: Signs, Causes and How to Help](https://www.fluffsyork.co.uk/dog-grooming-tips-and-tricks/dog-skin-allergies) Dog skin allergies explained by a York groomer: flea, food, environmental and atopic causes, the signs to spot, coat-care help, and when to see your... Lucy Apr 26, 2026 Dog Nutrition ### [What Fruit Can Dogs Eat? A Groomer's Safe Fruit Guide](https://www.fluffsyork.co.uk/dog-grooming-tips-and-tricks/what-fruits-can-dogs-eat) What fruit can dogs eat? A York groomer's safe list, sensible portions, and the toxic exceptions like grapes and raisins to keep well off the menu. Lucy Apr 25, 2026 Dog Nutrition ### [Can Dogs Eat Sweets and Sugar? A Groomer's Safety Guide](https://www.fluffsyork.co.uk/dog-grooming-tips-and-tricks/can-dogs-eat-sweets-and-sugar) Can dogs eat sweets and sugar? No. A York groomer explains why sugar is bad and why xylitol in sweets and gum is highly toxic, plus what to do in an... 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