Dogs have a way of making those puppy eyes work every time we sit down for a meal. But before you give in and share a bite, you need to know that some human foods can be downright dangerous for your furry friend. While a tiny nibble might not always cause harm, repeated or excessive consumption could lead to serious health issues. Here are 20 everyday foods that can be risky for dogs and why you should keep them off the menu.

1. Chocolate

Chocolate contains theobromine and caffeine, both of which are bad for dogs. Chocolate becomes substantially more dangerous when its theobromine content rises. Convulsions, vomiting, diarrhea, and an increased pulse are all symptoms of chocolate poisoning.  Even small amounts can be harmful, so keep those sweets out of reach! If your dog accidentally eats chocolate, immediate veterinary attention is crucial to prevent severe poisoning.

2. Grapes and Raisins

While they might seem harmless, grapes and raisins can cause sudden kidney failure in dogs. Scientists aren’t sure exactly what makes them toxic, but even a small amount can lead to vomiting, lethargy, and loss of appetite. In severe cases, permanent kidney damage may occur. It’s best to avoid feeding your dog any food items that contain grapes or raisins, including baked goods or trail mixes.

3. Onions and Garlic

Both onions and garlic contain compounds that can damage your dog’s red blood cells, leading to anemia. While a tiny bit of garlic in pet-safe doses might have some health benefits, larger amounts—especially raw or powdered—can be toxic. Watch out for symptoms like weakness, vomiting, and breathlessness. Since these ingredients are common in many human dishes, always double-check food before offering it to your pup.

4. Avocados

Avocados contain persin, a substance that can be mildly toxic to dogs. While the flesh is less dangerous than the pit and skin, excessive consumption can lead to stomach upset. The biggest risk, however, is the large pit, which can be a choking hazard. Some dogs may also experience an allergic reaction to avocado, making it best to avoid altogether. Ingesting large amounts may also lead to pancreatitis due to its high fat content. If your dog accidentally eats avocado, monitor for signs of distress and contact your vet if symptoms arise.

5. Xylitol (Sugar Substitute)

Found in sugar-free gum, baked goods, and some peanut butter brands, xylitol can cause a rapid drop in blood sugar levels in dogs, leading to seizures and liver failure. Even a small amount can be life-threatening, so always check ingredient labels before sharing snacks. Xylitol poisoning progresses quickly, so if ingestion occurs, seek veterinary care immediately. Symptoms like vomiting, weakness, and collapse can develop within minutes. Always store xylitol-containing products securely to prevent accidental ingestion.

6. Alcohol

Alcohol affects dogs much faster than it does humans. Even a small sip of beer, wine, or liquor can cause vomiting, coordination problems, difficulty breathing, and in severe cases, coma or death. Keep alcoholic beverages and foods containing alcohol far away from your pup. Dogs are naturally curious, so never leave drinks unattended where they can access them. Even alcohol-based cooking ingredients, like vanilla extract, can be dangerous. If your dog consumes alcohol, immediate veterinary attention is crucial to prevent serious complications.

7. Macadamia Nuts

These nuts can cause severe weakness, tremors, seizures and hyperthermia in dogs. While the exact toxin is unknown, even a small handful can make your dog extremely sick. Symptoms typically appear within 12 hours of ingestion and can last for up to two days. To be safe, avoid giving your dog any type of nuts, as many can pose health risks. Macadamia nut poisoning is rarely fatal but can cause extreme discomfort. Recovery usually requires supportive care, such as IV fluids and pain management.

8. Raw Dough

Unbaked bread dough containing yeast can expand in your dog’s stomach, leading to bloating and even life-threatening gastric dilation. The fermentation process also produces alcohol, which can cause alcohol poisoning. If your dog eats raw dough, seek veterinary attention immediately to prevent complications. Symptoms like excessive drooling, retching, and a swollen belly indicate a serious problem. Quick intervention can prevent severe consequences, including gastric rupture.

9. Coffee and Caffeine

Like chocolate, caffeine contains methylxanthines that can be toxic to dogs. Even small amounts of coffee, tea, or energy drinks can lead to restlessness, elevated heart rate, tremors, and seizures. Dogs are much more sensitive to caffeine than humans, so be cautious about where you leave your drinks. Caffeine is also found in certain medications and diet pills, making them equally dangerous. If your dog ingests caffeine, activated charcoal may help limit absorption, but veterinary care is essential.

10. Dairy Products

While a small bit of cheese or yogurt is usually fine, many dogs are lactose intolerant and struggle to digest dairy. Excess dairy consumption can lead to bloating, gas, and diarrhea. If you want to treat your dog, opt for lactose-free alternatives or pet-safe dairy products. Certain cheeses, like blue cheese, contain mold toxins that can be harmful to dogs. Always introduce dairy in small amounts to gauge your dog’s tolerance level.

11. Bones (Cooked)

While raw bones can be beneficial in some cases, cooked bones become brittle and can splinter, causing choking hazards or severe internal injuries. Always supervise your dog with any type of bone and avoid cooked ones entirely to prevent digestive tract damage. Splintered bones can puncture the stomach or intestines, leading to life-threatening infections. Poultry and pork bones are particularly dangerous due to their fragility. Instead of cooked bones, opt for vet-approved chew toys or dental treats.

12. Fatty Foods (Like Bacon and Fried Food)

Too much fatty food can lead to pancreatitis in dogs, a painful and potentially life-threatening condition. Symptoms include severe vomiting, loose motion, abdominal pain, and lethargy. Limiting high-fat foods in your dog’s diet can help prevent long-term health problems. Chronic exposure to fatty foods can also contribute to obesity and heart disease. Some dogs are more prone to pancreatitis, especially breeds like Miniature Schnauzers. Feeding a balanced, low-fat diet is the best way to keep your dog healthy.

13. Corn on the Cob

Corn itself isn’t toxic, but the cob can cause a dangerous intestinal blockage if swallowed. Many dogs don’t chew it properly, making it a serious choking hazard. Always remove the cob before giving your dog corn. Even small pieces of cob can cause partial obstructions, leading to vomiting and distress. Surgery may be required if a dog swallows a large portion of the cob. To avoid risks, stick to cooked corn kernels as a safer alternative.

14. Tomatoes (Unripe or Leaves)

While ripe tomatoes in small amounts aren’t too dangerous, green tomatoes, stems, and leaves contain solanine, which can cause drooling, confusion, and digestive upset. It’s best to keep your dog away from tomato plants and unripe tomatoes to be safe. Large amounts of solanine can lead to serious neurological issues like tremors and weakness. Tomato-based products like sauces and soups often contain added ingredients like garlic or onions, which are toxic to dogs. If your dog ingests tomato plant parts, monitor them for symptoms and call your vet if needed.

15. Peaches and Plums (Pits)

The flesh of peaches and plums isn’t particularly dangerous, but their pits contain cyanide, which can be toxic if chewed. The pits may also cause a choking hazard. Always remove the pit before offering fruit to your pup. Even if not chewed, pits can become lodged in the intestines, requiring emergency surgery. Dried peaches and plums (prunes) often contain preservatives and high sugar levels, which aren’t healthy for dogs. Opt for seedless alternatives like sliced apples or bananas.

16. Salt and Salty Snacks

An excess of salt can cause extreme thirst, frequent urination, and even sodium ion poisoning in dogs. Symptoms include vomiting, tremors, and seizures. Chips, pretzels, and salted nuts should be off-limits. Stick to unsalted treats specifically made for dogs. Excess sodium can also cause long-term issues like high blood pressure and kidney damage. Some processed foods, like deli meats and canned soups, contain dangerously high salt levels. Always check labels before sharing any human food with your pet.

17. Mushrooms (Wild)

While store-bought mushrooms are generally safe, wild mushrooms can be highly toxic and lead to liver failure, seizures, or even death. Since it’s hard to distinguish safe mushrooms from toxic ones, it’s best to avoid them altogether. According to research, certain mushroom species can cause fatal reactions in dogs. Symptoms of mushroom poisoning can take hours or even days to appear, making early detection crucial. Common toxic mushrooms include Amanita, Galerina, and Gyromitra species. If you suspect your dog has eaten a wild mushroom, seek immediate veterinary care.

18. Nutmeg

Nutmeg contains myristicin, which can cause hallucinations, increased heart rate, high blood pressure, and seizures in dogs. Even small amounts can lead to an upset stomach, so keep your holiday baking out of their reach. Spices in general should be used cautiously with dogs. Nutmeg poisoning symptoms can last up to 48 hours, requiring intensive care. Other holiday spices like cinnamon and cloves can also cause irritation or toxicity. If your dog ingests nutmeg, contact your vet for guidance on treatment.

19. Cherries

The flesh of cherries isn’t toxic, but the pits, stems, and leaves contain cyanide, which can be deadly if consumed in large amounts. A swallowed pit can also cause an intestinal blockage. Safer fruit alternatives include blueberries and apples (without seeds). Even one or two cherry pits can lead to poisoning in small dogs. The tough pit can also crack teeth, leading to dental issues. To be safe, keep cherries out of reach and offer dog-friendly fruits instead.

20. Raw Eggs

Raw eggs can carry bacteria – mostly Salmonella or E. coli, which can make dogs sick. Additionally, raw egg whites contain avidin, which can interfere with vitamin B absorption and lead to skin and coat issues. Cooked eggs are a much safer option for dogs. Feeding raw eggs regularly can also increase the risk of biotin deficiency. If you prefer to give eggs as a treat, scrambled or boiled eggs without added seasoning are ideal. Always store eggs properly to prevent bacterial contamination.

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