Quick answer: The most dangerous foods for dogs include xylitol (a sweetener in sugar-free gum, candy, some peanut butters and baked goods), grapes and raisins, chocolate, onions, garlic, leeks and chives, macadamia nuts, alcohol, raw yeast bread dough, caffeine and cannabis edibles. Fatty foods, cooked bones and corn cobs can also cause serious problems. If your dog eats something toxic, call your vet, an emergency clinic or a pet poison hotline right away, even if your dog seems fine. Don't make your dog vomit unless a professional tells you to.

If your dog just ate something toxic, do this now

Skip to this section first if it's an emergency. Speed matters more than anything else.

• 1. Stay calm and remove the food. Move your dog away and take any remaining food out of reach.
• 2. Figure out what and how much. Grab the packaging. Note the ingredients, how much is missing and when your dog ate it.
• 3. Call for help right away. Call your vet, a 24-hour emergency clinic, the ASPCA Animal Poison Control Center (888-426-4435) or the Pet Poison Helpline (855-764-7661). A consultation fee may apply.
• 4. Don't make your dog vomit unless told to. Inducing vomiting can be dangerous for some substances and some dogs. Only do it if a vet or poison expert instructs you.
• 5. Follow their advice. They may tell you to watch at home or come in immediately. Bring the packaging with you.

Even if your dog seems perfectly fine, call anyway. Some toxins, like xylitol and grapes, can cause serious damage before symptoms show. Keep these numbers in your phone and in your dog first aid kit.

The 8 most dangerous foods to know by heart

If you remember nothing else, remember these. They cause some of the most serious and most common food poisonings in dogs.

• Xylitol. A sugar substitute in sugar-free gum, mints, candy, some peanut butters, baked goods and even some medications. It can cause a rapid, dangerous drop in blood sugar and liver failure. Even a small amount can be an emergency.
• Grapes, raisins, currants and sultanas. Can cause sudden kidney failure. The toxic amount varies widely between dogs, so no amount is considered safe.
• Chocolate. Contains theobromine and caffeine. Dark and baking chocolate are most dangerous. Read our full guide: my dog ate chocolate.
• Onions, garlic, leeks and chives. Damage red blood cells and can cause anemia. Raw, cooked, powdered and dehydrated forms are all risky.
• Macadamia nuts. Can cause weakness, wobbliness, vomiting, tremors and fever.
• Alcohol. Dogs are far more sensitive than people. Even small amounts can cause dangerous drops in blood sugar, blood pressure and body temperature.
• Raw yeast bread dough. Expands in the stomach and produces alcohol as it ferments, causing bloating and alcohol poisoning.
• Cannabis edibles. THC can cause wobbliness, dribbling urine, a slow heart rate and severe sedation. Edibles may also contain chocolate or xylitol.

Print this list or save it to your phone. When something goes wrong, you won't have time to search, and knowing these eight by heart means you can act in seconds rather than minutes.

A to F

Here's the full alphabet, starting with the foods you're most likely to find in your kitchen.

• Alcohol. Highly toxic. Includes beer, wine, spirits, and foods made with alcohol like rum cake. Signs: vomiting, wobbliness, slow breathing, collapse.
• Apple cores and seeds. Apple flesh is a fine treat, but seeds contain small amounts of cyanide compounds and cores can cause choking or blockages. Remove both.
• Avocado. Contains persin. Dogs are less sensitive than many animals, but the flesh is high in fat and the pit is a serious choking and blockage risk.
• Bones (cooked). Cooked bones splinter easily and can cause mouth injuries, choking, constipation and intestinal blockages or tears.
• Caffeine. Coffee, tea, energy drinks, caffeine pills and coffee grounds can cause restlessness, a racing heart, tremors and seizures.
• Cherries, peaches and plums (pits). The flesh is low risk, but pits and stems contain cyanide compounds and can cause blockages.
• Chewing gum. Sugar-free gum often contains xylitol. Treat any gum as an emergency until you've checked the label.
• Chives. Part of the onion family. Toxic to red blood cells.
• Chocolate. Toxic. Darker means more dangerous. White chocolate is very low in theobromine but still high in fat and sugar.
• Coffee grounds and beans. Very concentrated caffeine. Keep compost and coffee pods out of reach.
• Corn on the cob. Corn kernels are fine, but cobs are a very common cause of intestinal blockage.
• Fatty foods. Bacon, fat trimmings, gravy, fried foods and rich leftovers can trigger pancreatitis, a painful inflammation of the pancreas.

G to M

• Garlic. Toxic to red blood cells, like onions. Garlic powder and garlic salt are concentrated and especially risky.
• Grapes and raisins. Can cause kidney failure. Includes raisin bread, trail mix, cereal and fruitcake.
• Hops. Used in beer brewing. Can cause a dangerous spike in body temperature. A concern for home brewers.
• Ice cream. Not toxic in small amounts, but high in sugar and fat, and many dogs are lactose intolerant. Chocolate, xylitol and raisin flavors are dangerous.
• Leeks. Onion family, toxic to red blood cells.
• Macadamia nuts. Toxic. Can cause weakness in the back legs, tremors and fever. Often found in cookies.
• Moldy food. Moldy bread, cheese, nuts and compost can contain tremorgenic mycotoxins that cause tremors and seizures.
• Mushrooms (wild). Store-bought plain mushrooms are generally fine, but some wild mushrooms are deadly. Treat any wild mushroom as an emergency.

If you're unsure whether a wild mushroom from your yard is dangerous, take a photo and bag a sample for your vet. Identifying mushrooms is difficult even for experts.

N to R

• Nutmeg. Large amounts can cause disorientation, a fast heart rate and seizures. A tiny amount in baked goods is unlikely to cause harm, but avoid nutmeg-heavy treats.
• Nuts (other). Many nuts are high in fat and can cause stomach upset or pancreatitis. Walnuts and pecans can carry mold. Salted nuts add sodium risk.
• Onions. Toxic in all forms: raw, cooked, fried, powdered, dehydrated and in soups, gravies and baby food.
• Peanut butter with xylitol. Plain peanut butter is a popular treat, but always check the label. Some brands use xylitol, sometimes listed as birch sugar.
• Raisins. See grapes. Highly toxic.
• Raw salmon and trout from the Pacific Northwest. Can carry a parasite that causes salmon poisoning disease, which can be fatal without treatment.
• Raw yeast dough. Expands and ferments in the stomach. An emergency.

S to Z

• Salt. Large amounts from salty snacks, homemade play dough, rock salt or seawater can cause salt poisoning, with vomiting, wobbliness and seizures.
• Sugar-free candy and baked goods. Often contain xylitol. Always check the label.
• Tea. Contains caffeine.
• Tomato plants. Ripe tomato flesh is generally fine in small amounts, but green tomatoes, stems and leaves contain solanine and can cause stomach upset.
• Xylitol. Also called birch sugar. One of the most dangerous food toxins for dogs. An emergency every time.
• Yeast dough. See raw yeast dough. An emergency.

Not on the list? That doesn't automatically mean it's safe. When in doubt, call your vet or a poison hotline.

Why size, amount and timing matter

Poison experts always ask three questions: what did your dog eat, how much, and how big is your dog? The same snack can be harmless for a Great Dane and an emergency for a Chihuahua.

Chocolate is a good example. A few chocolate chips might cause mild stomach upset in a large Lab, while a square of dark baking chocolate could be dangerous for a small terrier. That's why poison hotlines calculate risk based on your dog's weight and the exact product.

Some foods don't follow those rules. With grapes and raisins, scientists still don't fully understand why some dogs are affected and others aren't, so even a small amount is treated seriously. With xylitol, the amount in a couple of pieces of gum can be enough to harm a small dog.

Timing matters too. Many treatments, like inducing vomiting under vet supervision or giving activated charcoal, work best within the first hour or two. Calling quickly gives your vet the most options.

What happens at the vet

If your vet asks you to come in, here's what typically happens, so you know what to expect.

First, the vet will ask for details about what your dog ate, how much and when, so bring the packaging. They'll examine your dog and check vital signs.

Depending on the toxin and timing, they may safely induce vomiting with medication, give activated charcoal to bind remaining toxins, start IV fluids to protect the kidneys or support blood pressure, and run blood tests to check blood sugar, liver and kidney values. Some dogs go home the same day. Others need to stay for monitoring for a day or more.

It's natural to feel guilty, but accidents happen to even the most careful families. The best thing you can do is act fast, follow the plan and use the experience to dog-proof a little more.

Human foods that are usually safe in small amounts

Not every human food is off limits. These are generally safe for most healthy dogs as an occasional treat, plain and in small pieces:

• Fruits. Apple slices (no seeds or core), blueberries, banana, watermelon (no seeds or rind), strawberries.
• Vegetables. Carrots, green beans, cucumber, plain cooked pumpkin, plain cooked sweet potato.
• Proteins. Plain cooked chicken, turkey and lean beef without bones, seasoning or skin. Plain cooked eggs.
• Grains. Plain cooked rice and plain oats.
• Dairy. Small amounts of plain yogurt or cheese if your dog tolerates dairy.

Treats, including human foods, should make up no more than about 10 percent of your dog's daily calories. Our summer fruits guide lists more dog-safe fruits.

Signs of food poisoning in dogs

Symptoms depend on what your dog ate, how much and when. Some appear within minutes, others take hours or even days.

• Stomach signs. Vomiting, diarrhea, drooling and loss of appetite.
• Neurological signs. Wobbliness, tremors, seizures, confusion and extreme sleepiness.
• Heart and breathing signs. A racing or very slow heart rate, heavy panting and collapse.
• Other signs. Pale gums, weakness, increased thirst or urination, a bloated belly and restlessness.

Some toxins, including xylitol, grapes and onions, can cause damage before your dog shows any signs. That's why you should call for advice as soon as you know your dog ate something risky. Our upset stomach guide explains home care for mild tummy troubles once a vet has ruled out poisoning.

Where toxic foods hide

Most poisonings happen because a dog finds something we didn't think of as dangerous. Watch these spots:

• Purses, backpacks and coat pockets. Sugar-free gum, mints and snacks.
• Kitchen counters and tables. Raisin bread, onion dishes, chocolate and rising dough.
• Trash and compost bins. Moldy food, bones, corn cobs and coffee grounds. Use secure lids.
• Guests and parties. Well-meaning visitors may slip your dog scraps. See our holiday guests guide.
• Kids' snacks. Raisins, grapes, chocolate and candy at dog-eye level.
• Medicine cabinets. Some chewable vitamins and medicines contain xylitol.

How to dog-proof your kitchen

A few simple habits prevent most food poisonings:

• Keep counters clear. Assume anything within nose reach is fair game.
• Use a lidded or locking trash can. Or keep it behind a closed cabinet door.
• Teach leave it and drop it. Two of the most useful safety cues. Our training glossary explains how they work.
• Read labels. Especially peanut butter, gum, baked goods and anything sugar-free.
• Set house rules for guests and kids. No feeding the dog without asking.
• Use baby gates during cooking and parties. Some dogs simply can't resist.

For a full room-by-room checklist, read our dog-proofing your home guide.

Seasonal danger foods

Some risks spike at certain times of year:

• Easter. Chocolate eggs and hot cross buns with raisins. See our Easter guide.
• Summer. Corn cobs, kebab skewers, fatty barbecue scraps and fruit pits.
• Halloween. Chocolate, sugar-free candy and wrappers.
• Thanksgiving and Christmas. Turkey bones, fatty skin, stuffing with onions, fruitcake and chocolate. See our holiday foods guide.

Dogs at higher risk

Some dogs are more likely to get into trouble, or to be hit harder when they do. Small dogs, puppies, seniors and dogs with health conditions deserve extra caution.

Small dogs need far less of a toxin to be affected. Puppies explore the world with their mouths and are notorious for chewing purses and backpacks. Senior dogs and dogs with kidney, liver or heart disease may have less reserve to cope with a toxin, and dogs with a history of pancreatitis can flare after a single fatty meal.

Then there are the professional scavengers. Labradors, Beagles and many terriers are famous for finding food anywhere. If your dog is one of them, assume they'll find whatever you leave out, and set up your home accordingly.

Teaching kids about dog-safe snacks

Kids love sharing, and dogs love kids who share. A few simple rules help keep both safe:

Make a family dog snack list. Write down three or four approved treats, like carrot sticks or apple slices, and keep them in a labeled container. Kids can help give these, with permission.

Teach the no-share foods. Grapes, raisins, chocolate and candy are easy for kids to remember. Make it a game: can you name three foods dogs can't eat?

Eat at the table. Snacks eaten on the couch or floor are much easier for a dog to steal. Our kids and dogs guide has more family-friendly safety rules.

Food safety myths

A few popular beliefs can put dogs at risk:

• A little garlic is good for fleas. Garlic doesn't reliably repel fleas and can harm red blood cells. Use a vet-approved flea product instead.
• White chocolate is totally safe. It's very low in theobromine, but still fatty and sugary and can cause stomach upset or pancreatitis.
• If my dog ate it before and was fine, it's safe. Reactions can vary, especially with grapes and raisins.
• Natural means safe. Many toxic foods are perfectly natural, like grapes, onions and macadamia nuts.
• Bread is always fine. Baked plain bread is usually harmless, but raw dough and raisin bread are not.

Find more surprises in our dog myths guide.

Your Poison Prevention Week checklist

Use the third week of March to make your home safer in under an hour:

• Save the numbers. Add your vet, nearest emergency clinic and both poison hotlines to your phone.
• Do a kitchen sweep. Check counters, low cabinets and pantry shelves for chocolate, raisins, nuts and sugar-free products.
• Check every label. Look for xylitol or birch sugar in peanut butter, gum, mints, vitamins and baked goods.
• Upgrade the trash can. Choose one with a locking or heavy lid.
• Brief the family. Make sure kids, partners and pet sitters know the top dangerous foods.
• Restock your first aid kit. Including a card with emergency numbers.

Cheat sheet

Screenshot this and stick it on the fridge:

• Xylitol, grapes, chocolate, onions and garlic top the list.
• Check labels for xylitol and birch sugar.
• No cooked bones or corn cobs.
• Call your vet or poison control right away.
• Don't induce vomiting unless told to.
• ASPCA: 888-426-4435. Pet Poison Helpline: 855-764-7661.

• Know the big eight. Xylitol, grapes, chocolate, onions, macadamias, alcohol, dough and cannabis.
• Read every label. Xylitol hides in surprising places.
• Call first, act fast. Even if your dog seems fine.
• Don't induce vomiting on your own. Wait for professional advice.
• Prevention is easy. Clear counters, lidded bins and leave it.

Image: Product photo

Shop now

Shop this article

What is the most toxic food for dogs?

Xylitol is one of the most dangerous because even small amounts can cause low blood sugar and liver failure.

How many grapes are toxic to dogs?

There's no known safe amount. Call your vet even if your dog ate just one or two.

Can dogs eat garlic?

No. Garlic damages red blood cells, and powdered garlic is especially concentrated.

What should I do if my dog ate something toxic?

Call your vet, an emergency clinic or a pet poison hotline right away, even if your dog seems fine.

Should I make my dog throw up?

Only if a vet or poison expert tells you to. It can be dangerous for some toxins.

Is peanut butter safe for dogs?

Plain peanut butter usually is. Check the label for xylitol, also called birch sugar.

Can dogs eat avocado?

Small amounts of flesh are usually low risk, but it's fatty and the pit is a choking hazard.

Can dogs eat cooked bones?

No. Cooked bones splinter and can cause choking, injuries and blockages.

How long after eating something toxic will a dog show symptoms?

It varies from minutes to days depending on the toxin. Call for advice immediately.

What is the pet poison control number?

ASPCA Animal Poison Control is 888-426-4435 and Pet Poison Helpline is 855-764-7661. Fees may apply.