top of page

Beware the Bite: Dangerous Human Foods for Dogs

As pet owners, we often want to share our favorite foods with our furry friends. While it's tempting to let your dog indulge in table scraps or enjoy a bite of your snack, many human foods can be dangerous or even deadly for dogs. Understanding which foods to avoid is crucial for keeping your canine companion healthy and safe. In this blog post, we'll explore some of the most common foods that can harm dogs and explain why they should be off-limits.


Chocolate is one of the most well-known toxic foods for dogs. It contains theobromine, a stimulant that dogs metabolize much more slowly than humans. Even small amounts of chocolate can cause vomiting, diarrhea, and dehydration. In severe cases, it can lead to seizures, internal bleeding, or heart failure. Dark chocolate and baking chocolate are especially dangerous due to their higher theobromine content.

Grapes and Raisins

Grapes and raisins may seem harmless, but they can cause acute kidney failure in dogs. The exact substance in grapes and raisins that triggers toxicity is unknown, but even small amounts can lead to severe health problems. Symptoms include vomiting, diarrhea, lethargy, and loss of appetite. In severe cases, it can lead to kidney failure, which can be fatal.

Onions and Garlic

Onions and garlic, whether raw, cooked, or powdered, contain compounds that can damage dogs' red blood cells, leading to hemolytic anemia. Symptoms of onion or garlic poisoning include weakness, vomiting, and breathing difficulties. It's important to keep all forms of onions and garlic out of your dog's diet, including foods that may contain onion or garlic powder.


Xylitol is a sugar substitute commonly found in sugar-free gum, candy, baked goods, and some peanut butters. In dogs, xylitol can cause a rapid release of insulin, leading to hypoglycemia (low blood sugar). Symptoms include vomiting, loss of coordination, seizures, and liver failure. Xylitol is extremely toxic to dogs, even in small amounts, so it's crucial to check ingredient labels and keep products containing xylitol out of reach.


Alcohol has a much more pronounced effect on dogs than on humans. Even small amounts of alcohol can lead to vomiting, diarrhea, central nervous system depression, difficulty breathing, tremors, and even death. This includes not only alcoholic beverages but also foods containing alcohol, such as certain desserts and marinades.


Caffeine is found in coffee, tea, soda, and energy drinks. It contains methylxanthines, which are harmful to dogs. Symptoms of caffeine poisoning include restlessness, rapid breathing, heart palpitations, muscle tremors, and seizures. In severe cases, it can be fatal. Keep caffeinated beverages and foods out of your dog's reach.

Macadamia Nuts

Macadamia nuts are highly toxic to dogs, though the exact cause of the toxicity is unknown. Consumption can lead to weakness, depression, vomiting, tremors, and hyperthermia. Symptoms usually appear within 12 hours of ingestion and can last up to 48 hours. While macadamia nut poisoning is rarely fatal, it can cause significant discomfort and distress for your dog.


Avocados contain persin, a fungicidal toxin that can cause vomiting and diarrhea in dogs. While dogs are generally less sensitive to persin than other animals, it's best to avoid feeding them avocado, including the fruit, pit, skin, and leaves. Additionally, the large pit poses a choking hazard and can cause intestinal blockage if ingested.

Bones and Fat Trimmings

Cooked bones and fat trimmings can cause a range of health issues for dogs. Cooked bones can splinter and cause choking, mouth injuries, or digestive tract obstructions. Excessive fat, whether cooked or raw, can lead to pancreatitis, a painful and potentially life-threatening condition. Always provide your dog with safe, commercially available chew toys and bones.

Dough and Yeast

Raw dough containing yeast can expand in your dog’s stomach, leading to bloating and potential gastric torsion (a life-threatening condition where the stomach twists). Additionally, yeast produces alcohol as it ferments, which can cause alcohol poisoning. Keep raw dough out of reach and be cautious when baking at home.


While it’s natural to want to share the joys of food with your dog, it's important to be aware of the potential dangers. Many human foods can be harmful or even fatal to dogs. By keeping these foods out of reach and being mindful of what your dog consumes, you can help ensure they stay happy and healthy. If you suspect your dog has ingested a toxic food, contact your veterinarian or an emergency pet poison hotline immediately. Your vigilance can make all the difference in safeguarding your furry friend’s well-being.

6 views0 comments


bottom of page