Chocolate
Contains theobromine, toxic to dogs, can cause vomiting, diarrhea, and even death.
Grapes and raisins
Can lead to kidney failure in dogs, symptoms include vomiting, diarrhea, and increased thirst.
Onions and garlic
Damages red blood cells, causes anemia, symptoms include weakness and pale gums.
Xylitol
Artificial sweetener found in various products, can cause low blood sugar, vomiting, seizures, and liver failure.
Avocado
Contains persin, toxic in large amounts, may cause stomach upset and diarrhea.
Alcohol
Highly dangerous, can cause alcohol poisoning, leading to vomiting, disorientation, and even coma.
Bones
Cooked bones can splinter, causing choking hazards and intestinal blockages in dogs.