Your dog stares at you with those big, pleading eyes while you’re eating dinner. It’s hard to resist, right? Most dog owners have sneaked their furry friend a scrap or two from the table at some point. It seems harmless enough.
The thing is, some foods that humans enjoy every day can be downright dangerous for dogs. We’re not just talking about a little tummy upset here. Some of these items can cause serious health problems, even death. Let’s be real, many pet parents still hand over these risky foods without knowing the damage they could be doing.
So what should you absolutely avoid? Let’s dive in and uncover the foods hiding in your kitchen that could send your pup straight to the emergency vet.
1. Chocolate: The Classic Culprit Everyone Knows (But Still Feeds)
You’ve probably heard this one before, yet chocolate poisoning remains shockingly common. Chocolate made up 13.6% of pet poison exposures encountered in 2024, and dogs don’t have an “off button” when it comes to chocolate. The darker the chocolate, the more dangerous it becomes.
Chocolate, coffee, and caffeine toxicity concerns stem from their methylxanthine concentrations, and when ingested by pets, methylxanthines can cause vomiting and diarrhea, panting, excessive thirst and urination, hyperactivity, abnormal heart rhythm, tremors, seizures and even death, with the darker chocolate or higher caffeine content presenting greater risk. Even milk chocolate can be toxic in large enough quantities.
Chocolate is toxic to all species, especially to smaller dogs, though a toxic dose varies depending on factors like whether the dog ate the chocolate on an empty stomach, if the dog is particularly sensitive to chocolate, and the type of chocolate, with indiscriminate eating habits and readily available sources of chocolate being contributing factors.
2. Grapes and Raisins: The Mystery Toxin
Here’s the thing about grapes and raisins: veterinarians still aren’t entirely sure what makes them so toxic to dogs. Tartaric acid is speculated to be the toxic component in grapes and raisins, and since dogs are not able to process tartaric acid, exposure to grapes or raisins can lead to kidney damage. The scary part is that even a few grapes can cause severe problems.
Grapes and raisins are dangerous to dogs, and these fruits can cause serious problems like kidney failure because their tartaric acid is toxic to your dog’s kidneys, with a few bites being enough to wreak havoc and symptoms of poisoning including vomiting and diarrhea, loss of appetite, changes in the amount of urine passed, or not passing any urine.
Many holiday foods like fruitcakes and stuffing contain raisins. Even a few grapes or raisins can cause kidney failure in dogs and possibly cats, and these fruits often show up in holiday foods like stuffing, baked goods, and fruitcakes. I think it’s worth checking ingredient lists carefully before sharing any baked goods.
3. Xylitol: The Silent Sweetener That’s Everywhere
Xylitol is probably the most dangerous item on this list that most people have never heard of. Xylitol is extremely toxic to dogs, and even small amounts of xylitol can cause hypoglycemia (low blood sugar), seizures, liver failure, or even death. It’s hiding in so many products these days.
In 2024, there were more than 10,000 calls to the ASPCA Animal Poison Control Center from across the country concerning dogs that ingested xylitol, with over 250 calls coming from Arizona. That’s a staggering number.
Xylitol is a naturally occurring substance that is widely used as a sugar substitute and is found naturally in berries, plums, corn, oats, mushrooms, lettuce, trees, and some other fruits, with most commercial xylitol extracted from corn fiber or birch trees, and although it has been used as a sugar substitute for decades, its popularity has increased dramatically in the last decade due to its low glycemic index and dental plaque fighting properties, and xylitol can be found in oral care products, pharmaceuticals, and as a food additive including sugar-free gum, candies, breath mints, baked goods, peanut butter, pudding snacks, and cough syrup as well as chewable or gummy vitamins, supplements or over-the-counter medications, mouthwash, and toothpaste.
4. Onions and Garlic: Everyday Seasonings With Serious Consequences
Most people season their food with onions and garlic without thinking twice. Garlic is considered the most toxic of all plants in the allium family, and garlic can severely damage a dog’s red blood cells, causing them to rupture. This includes powdered forms, cooked forms, and every variation you can imagine.
Allium vegetables such as onions, garlic, chives, and leeks are toxic to pets, whether raw, cooked, powdered, or dehydrated, and garlic is roughly five times more potent than onions.
Onion, garlic and chives are members of the Allium species of vegetables, and Allium species can cause gastrointestinal irritation and red blood cell damage, which can lead to anemia, and although cats are more susceptible, dogs are also at risk depending on the amount ingested. Honestly, it’s hard to say for sure how much is too much, but why risk it?
From 1994 to 2008, 69 cases of canine poisoning and 4 cases of feline poisoning by Allium species ingestion were recorded by the Veterinary Poisons Information Service.
5. Macadamia Nuts: The Hawaiian Mystery
Macadamia nuts are another food where the exact toxic mechanism remains unknown. While macadamia nuts are edible for humans, they are poisonous to dogs, the toxic component in the nut is unknown, but it only requires a few nuts to result in illness, and currently, macadamia nut poisoning is only recognized in dogs. Cats seem to be fine, but dogs? Not so much.
Macadamia nuts can cause dogs to suffer numerous painful symptoms, including weakness, overheating and vomiting, and though the exact mechanism for the poisoning is something of a mystery, these famous Hawaiian exports are considered toxic to dogs, with as few as six nuts causing severe poisoning in a small dog.
Within 12 hours after ingestion, dogs with macadamia nut toxicosis typically develop weakness, CNS depression, vomiting, ataxia, tremors, or hyperthermia, and tremors may be secondary to muscle weakness. The good news? Clinical signs generally resolve within 12 to 48 hours.
6. Alcohol: Not Even a Little Sip
Alcohol is significantly more toxic to dogs than to humans, and when consumed, even small quantities of alcoholic beverages and food products may cause vomiting, diarrhoea, decreased coordination, central nervous system depression, difficulty breathing, tremors, blood changes, coma and even death. I know it sounds crazy, but some people actually think it’s funny to let their dog taste beer.
Because cats and dogs are smaller than humans, alcohol can have a deadlier effect on them, and even small amounts of alcohol can cause harm.
Remember that alcohol can also be produced in your dog’s stomach from eating raw bread dough. Yeast dough can rise and cause gas to accumulate in your pet’s digestive system, which can be painful and cause the stomach to bloat and potentially twist, becoming a life-threatening emergency, and the yeast also produces alcohol as a by-product in the stomach environment once ingested, so raw bread dough exposures can develop complications of alcohol toxicity as well.
7. Caffeine: Your Morning Coffee Is Their Nightmare
Dogs are far more sensitive to caffeine than humans. While 1 to 2 laps of coffee, tea or soda will not contain enough caffeine to cause poisoning in most pets, the ingestion of moderate amounts of coffee grounds, tea bags or 1 to 2 diet pills can easily cause death in small dogs or cats. That’s genuinely frightening when you think about how easily a dog could get into a trash can.
In dogs, 140 mg per kg (63 mg per lb) can be toxic, and for cats that value ranges from 80 to 150 mg per kg (36 to 68 mg per lb).
Pets that consume caffeine may have an increased heart rate and become hyperactive, can get jittery and restless and do not want to lie still, may also pace or vocalize excessively, and caffeine causes cardiac and central nervous system stimulation, which can be dangerous. Energy drinks are particularly problematic because they contain such concentrated amounts.
8. Avocados: The Trendy Toast Topping
Avocados might be a superfood for humans, but they’re not doing your dog any favors. All parts of the avocado including the fruit, leaves, stems, and seeds can cause poisoning in animals, with the leaves being the most toxic part, and horses, rabbits, guinea pigs, budgerigars, canaries, cockatiels, and fish are susceptible.
High fat content of avocado can lead to pancreatitis, and the symptoms include gastrointestinal irritation, vomiting, diarrhoea, respiratory distress, congestion, fluid accumulation around the tissues of the heart and even death. Let’s be real, most dogs would gobble up dropped avocado without hesitation.
9. Raw Meat and Eggs: The Bacterial Minefield
Some people advocate for raw diets, but there are serious risks involved. Raw meat and raw eggs can contain bacteria such as Salmonella and E. coli that can be harmful to pets and humans alike, and raw eggs contain an enzyme that can interfere with absorption of certain vitamins, leading to skin and coat problems.
Feeding your pet raw bones may seem like a natural and healthy option that might occur if your pet lived in the wild, however, this can be dangerous for a domestic pet, and dogs or cats might sustain injury or obstruction to the gastrointestinal tract when ingesting bones, which could be serious and require surgery.
10. Salty Foods: More Than Just Thirst
Excessive amounts of salt can change the fluid balance of cells in your dog, and too much salt can cause tremors, seizures, diarrhea or even coma. Think about all those salty snacks we munch on without thinking: chips, pretzels, salted nuts.
Honestly, dogs don’t need added salt in their diet. Their regular dog food already contains the right amount. Sharing your potato chips might seem like a harmless treat, but it can add up quickly, especially for smaller dogs.
11. Dairy Products: The Lactose Problem
Because pets do not possess significant amounts of lactase (the enzyme that breaks down lactose in milk), milk and other dairy-based products can cause diarrhea or other digestive upset. Many owners think milk is a nice treat, but most adult dogs are lactose intolerant.
Like other dairy products, dogs find it difficult to break down cheese, while eating large amounts of higher fat varieties can cause sickness and diarrhoea, however blue cheeses such as Stilton and Roquefort are particularly dangerous as many contain a substance called roquefortine C which dogs are especially sensitive to, and roquefortine C may cause vomiting and diarrhoea and potentially also tremors, twitching, seizures and a high temperature if eaten in large doses.
12. Spicy Foods: Not Built for Heat
Hot, spicy food can cause vomiting, stomach ulcers or diarrhea, which can be painful for your dog and your wallet if they end up at the emergency room. Dogs weren’t designed to handle the capsaicin found in hot peppers and spicy sauces.
I think we sometimes forget that dogs have much more sensitive digestive systems than we do. What seems like mild seasoning to us can be overwhelming for them. Their taste buds and stomachs just aren’t equipped to handle the same variety of flavors and ingredients we enjoy.
In 2024, ASPCA Animal Poison Control Center staff responded to more than 451,000 calls related to toxic substance exposures in animals, representing a nearly 4% increase in calls compared to the previous year, and human food and drinks accounted for 16.1% of all exposures last year. That’s a massive number of preventable emergencies.
