10 foods that are toxic to dogs

29 March 2023

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10 Foods Toxic to Dogs

Many owners feed their pets leftovers from the table without realizing the harm they can cause. It’s important to remember that ordinary human food can be toxic to dogs. Some owners don’t understand that giving certain foods can lead to serious consequences, and they are often shocked to learn that something completely normal for humans can make a dog severely ill or even cause death. Every owner should familiarize themselves with the list of foods dangerous to dogs and completely exclude them from the diet, even in small amounts.

Chocolate and sweeteners

Chocolate contains the alkaloid theobromine, which is extremely toxic to animals. In addition to severe food poisoning, the following symptoms may occur:

seizures;
kidney disease;
impaired blood formation;
tachycardia;
tremors.
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Poisoning symptoms include vomiting, weakness, and reduced activity. This condition can be fatal, so you must contact a veterinarian immediately at the first signs.

Sweeteners, especially xylitol, pose a serious danger to dogs. This substance is often added to “sugar-free” products — chewing gum, candies, lozenges, some sauces, and even peanut butter. Xylitol is safe for humans, but in dogs it causes a sharp drop in blood sugar (hypoglycemia), which manifests as weakness, trembling, seizures, or even coma. In severe cases, acute liver damage occurs.

Alcohol

We’re talking not only about pure alcohol, but also about fermented products — for example, overripe apples, tomatoes, and yeast dough. These foods also contain ethanol. A person can tolerate a large dose of ethanol without fatal harm, but even a small concentration of alcohol is extremely dangerous for dogs. Symptoms of alcohol poisoning: unsteady gait, vomiting, lowered body temperature, acidosis.

Grapes and raisins

Grapes and raisins are also on the list of dangerous foods, although the exact cause of toxicity is not fully understood. After eating grapes or raisins, a dog experiences severe dehydration, abdominal pain, and loss of appetite. This product strongly affects the kidneys, often causing acute kidney failure — an extremely dangerous condition.

Onions and garlic

These popular foods contain sulfur compounds — thiosulfate and N-propyl disulfide — that cause oxidative stress. Both substances are toxic to dogs whether raw or cooked. Their consumption destroys red blood cells and leads to hemolytic anemia.

Avocado

Avocado contains the toxin persin, which can disrupt gastrointestinal function, although a healthy adult dog is usually resistant to it. However, due to its high fat content, avocado can trigger pancreatitis.

Fruit pits and leaves

Not all fruits are toxic — most can be given in moderation. But before treating a dog to any fruit, always remove the leaves, stems, and pits. The pits of stone fruits (apricots, peaches, cherries, plums) and even the leaves contain amygdalin, which breaks down into cyanide — a toxin that causes difficulty breathing, red gums, dilated pupils, and general depression. Fruits should only be offered completely cleaned of pits and seeds.

Liver

Liver is a powerful source of vitamin A, and excess of it is harmful to dogs. Veterinarians do not recommend including liver in the diet frequently, as hypervitaminosis A can lead to bone deformation at any age. When feeding a natural diet, liver can be given 1–2 times a week in moderate amounts.

High-fat foods

Fatty foods are not toxic per se, but excess fat seriously harms health. First of all, it leads to weight gain, and obesity increases the risk of cardiovascular, joint, and endocrine diseases. In addition, large amounts of fat can cause inflammation of the pancreas — pancreatitis, which can sometimes be very severe.

Important note: dogs must not be fed cat food. It contains significantly more protein and fat than a dog needs, and regular consumption can cause serious digestive and pancreatic problems.

Nuts

Nuts are rich in protein, fat, and calories, so they might seem beneficial. However, most nuts are hard for dogs to digest and can cause vomiting, diarrhea, or allergic reactions. Macadamia nuts are especially dangerous — even a small amount can cause weakness, trembling, fever, and impaired coordination. It’s also not recommended to give walnuts, pistachios, hazelnuts, or nutmeg. If you occasionally treat your dog to nuts, choose only unsalted cashews, pine nuts, or a very small amount of peanuts — and do it rarely.

Dairy products

Dairy products are not directly toxic, but as dogs age, they lose the ability to digest lactose due to reduced production of the necessary enzymes. This leads to diarrhea and gas. High-fat dairy products should also be avoided — they negatively affect the pancreas.

Conclusion

When caring for a dog, remember: even a small feeding mistake can cost your pet’s health. Many foods that are safe for humans become a serious threat to dogs due to differences in digestion and metabolism. The best way to show love is not to share “human” food with your dog, but to provide a proper balanced diet.