Some foods which are edible for humans, and even dogs, can be dangerous for cats because of their different metabolism. Some of the foods cause only mild digestive upsets, whilst others can cause severe illness, and even death.
The following list is by no means complete, but covers the more common food items that should not be fed to you cat, either intentionally or unintentionally.
| Alcoholic Beverages | Can cause intoxication. coma, and death |
| Baby Food | May contain onion pwder which can be toxic to cats. (See onion below). May also result in nutritional deficiency if baby food is fed in large amounts. |
| Fish, Poultry or other meat conating bones | Can cause obstruction or laceration of the digestive system |
| Canned Tuna (for Human consumption) | Large amounts can cause malnutrition as it lacks proper levels of vitamins and minerals your cat needs. |
| Chocolate, coffee, tea and other beverages containing caffeine | Contain Caffeine, Theobromine, or Theophylline, which can be toxic and affect the heart and nervous system |
| Citrus Oil Extract | Can cause vomiting |
| Dog Food | If fed regularly will cause malnutrition and may also cause disease affecting the heart |
| Fat Trimmings | Can cause Pancreatitis |
| Grapes and Raisins | Contain a toxin which can cause damage to the kidneys |
| Human vitamin supplements containing Iron | Can damage the lining of the digestive system and be toxic to the other organs including the liver and kidneys |
| Large amounts of Liver | Can cause Vitamin A toxicity which affects the muscles and bones |
| Macadamia Nuts | Contain a toxin which can affect the digestive system, nervous system and muscles |
| Marijuana!! | Can depress the nervous system, cause vomiting and change the heart beat rate |
| Milk and other dairy products intended for Humans | Can cause diarrhea. Most cats do not have sufficient amounts of the enzyme lactase which breaks down the lactose in milk. |
| Mushrooms | Some varieties of mushrooms contain a toxin that can affect multiple systems in the body, cause shock and result in death. |
| Onions and Garlic (Raw, cooked or powder/granular form) | Contain sulfoxides and disulfides which can damage the red blood cells and cause anemia. Garlic is less toxic than onions |
| Persimmons | The seeds can cause intenstinal obstruction and enteritis |
| Potatoes | Contain oxalates which can affect the digestive, nervous and urinary systems. |
| Raw Eggs | Contain an enzyme called avidin which decreases the absorption of Biotin (one of the B vitamins) which can lead to skin and coat problems. Raw eggs may also contain Salmonella. |
| Raw Fish | Can result in thiamine (one of the B vitamins) deficiency leading to loss of appetite, seizures, and in severe cases, death. More common if raw fish is fed regularly. |
| Rhubarb | Rhubarb contains oxalates. See 'Potatoes' above |
| Salt | If consummed in large quantities can lead to electrolyte imbalances |
| Sugary Foods | Can lead to obesity, dental problems and possibly diabetes mellitus |
| Table Scraps | Table scraps are not nutritionally balanced, and if fed, should only make up 10% of the cats overall diet |
| Yeast Dough | Can expand and produce gas in the digestive system, causing pain and possible rupture of the stomach or intestines |