If fed exclusively or in high amounts can result in a thiamine (a B vitamin) deficiency leading to loss of appetite, seizures, and in severe cases, death.
Contain an unknown toxin, which can damage the kidneys. There have been no problems associated with grape seed extract.
Can damage the lining of the digestive system and be toxic to the other organs including the liver and kidneys.
Contain an unknown toxin, which can affect the digestive and nervous systems and muscle.
Can depress the nervous system, cause vomiting, and changes in the heart rate.
Some adult dogs and cats may develop diarrhea if given large amounts of dairy products.
Can contain multiple toxins causing vomiting and diarrhea and can also affect other organs.
Can contain toxins, which may affect multiple systems in the body, cause shock, and result in death.
Contain sulfoxides and disulfides, which can damage red blood cells and cause anemia. Cats are more susceptible than dogs. Garlic is less toxic than onions.
Seeds can cause intestinal obstruction and enteritis.
Can cause obstruction of the digestive tract.
Contain an enzyme called avidin, which decreases the absorption of biotin (a B vitamin). This can lead to skin and hair coat problems. Raw eggs may also contain Salmonella.
May contain bacteria such as Salmonella and E. coli, which can cause vomiting and diarrhea.
Contain oxalates, which can affect the digestive, nervous, and urinary systems.
If eaten in large quantities it may lead to electrolyte imbalances.
Can become trapped in the digestive system; called a "string foreign body."