Chocolate: Chocolate contains theobromine and caffeine, which are toxic to dogs and can cause vomiting, diarrhea, rapid breathing, increased heart rate, seizures, and even death.
Grapes and Raisins: Even small amounts of grapes or raisins can cause kidney failure in dogs, leading to vomiting, diarrhea, lethargy, and dehydration.
Onions and Garlic: Onions and garlic, whether raw, cooked, or powdered, can damage a dog's red blood cells, leading to anemia. Symptoms include weakness, vomiting, breathlessness, and collapse.
Xylitol: This artificial sweetener is often found in sugar-free gum, candy, and some baked goods. Xylitol can cause a rapid release of insulin in dogs, leading to low blood sugar levels (hypoglycemia), which can be life-threatening.
Alcohol: Alcohol can cause intoxication and alcohol poisoning in dogs, leading to symptoms such as vomiting, diarrhea, difficulty breathing, tremors, coma, and even death.
Avocado: Avocado contains a substance called persin, which can cause vomiting and diarrhea in dogs. Additionally, the large pit poses a choking hazard, and if ingested, it can cause an obstruction in the digestive tract.
Macadamia Nuts: Macadamia nuts can cause weakness, depression, vomiting, tremors, and hyperthermia in dogs. In severe cases, they can also affect the dog's nervous system and lead to paralysis.