
Some human foods hurt dogs in small amounts, and the damage is not always visible for hours. Chocolate, grapes and raisins, onions and garlic, xylitol and alcohol sit at the top of the list. If your dog has eaten any of them, call a vet immediately instead of waiting for symptoms.
Chocolate contains theobromine, which dogs clear far more slowly than people do. Grapes and raisins can cause kidney failure, and there is no established safe dose for any dog. Onions, garlic, leeks and chives damage red blood cells. Xylitol, a sweetener in sugar-free gum and some peanut butters, triggers a sudden insulin release. Alcohol and raw bread dough cause the same effects as they do in people, at far smaller amounts.
Weight and quantity decide how serious the case is. A 3 kg Chihuahua eating one square of dark chocolate is a more urgent patient than a 35 kg Labrador eating a single milk chocolate button. When you call, give the product, the amount, the time it was eaten and the dog's weight.
Vomiting, drooling, restlessness, wobbliness, tremors, seizures, collapse, pale or dark gums and a racing heart are all reasons to go to a vet now. Xylitol in particular does its damage within 30 to 60 minutes, often while the dog still looks completely normal.
Never induce vomiting unless a vet tells you to. Some substances burn on the way back up, and chocolate and xylitol can be more dangerous coming back than going down. Do not give milk, oil, bread or salt water, because none of them neutralise a poison.
Cooked bones splinter and can perforate the gut, and raw bones still fracture teeth. Fatty scraps from a roast or a plate of sausages can trigger pancreatitis, which needs hospital treatment. Macadamia nuts cause tremors and weakness. Caffeine in coffee, tea and energy drinks is a stimulant a small dog cannot handle.
Avocado mostly causes stomach upset rather than poisoning, but the stone is a serious obstruction risk. Raw yeast dough keeps rising in the warm stomach and produces alcohol as it goes. Mouldy food and compost heaps carry tremorgenic toxins, and dogs raid bins far more often than owners expect. Corn cobs, peach stones and mango pips cause blockages that usually end in surgery.
Plain cooked chicken, plain rice, plain pumpkin and cooked egg are gentle on the stomach and useful when a vet suggests a bland diet. Carrot sticks, apple without the seeds, blueberries and cucumber make low-calorie training treats that most dogs will work for. Unseasoned and cut small is the rule for every one of them.
Keep every extra under 10 per cent of daily calories, and skip the seasoning, onion powder, garlic powder, salt and butter. Those are usually the real problem in a shared plate of food, not the meat itself.
Store chocolate, gum and raisins above counter height or behind a closed cupboard door, and keep handbags off the floor, since gum and medication live there. Latch the kitchen bin. Check the label on any peanut butter for xylitol before it goes near a food toy.
Teach everyone in the house the same rule, including children and visitors: nothing goes to the dog from a plate without someone checking it first. Keep a poison helpline number on the fridge where a sitter can find it. A dog that gets scraps at every meal will eventually get the wrong scrap.
Animal poison helplines and emergency vets exist for exactly this situation, and the call costs far less than treatment started late. Have the packaging to hand so you can read out the sweetener name, the cocoa percentage or the active ingredient.
Do not wait to see whether symptoms appear. By the time a dog is wobbling or vomiting repeatedly, the poison is already absorbed and treatment becomes longer, harder and more expensive.