Cats are obligate carnivores, which means that they require a diet that is rich in animal-based protein. They also need certain essential nutrients such as taurine, which is found primarily in animal-based foods. So, it’s important to feed your cat a diet that is formulated specifically for cats.

That being said, there are some foods that you should avoid feeding your cat. These include:

1. Onions and garlic: These foods can damage a cat’s red blood cells and lead to anemia.
2. Grapes and raisins: These fruits can cause kidney damage in cats.
3. Alcohol: Consuming even small amounts of alcohol can be dangerous for cats and can cause vomiting, diarrhea, and even coma or death in severe cases.
4. Dairy products: Many cats are lactose intolerant and cannot digest dairy products properly, which can lead to diarrhea and other digestive issues.
5. Chocolate: Chocolate contains a compound called theobromine, which can be toxic to cats. Dark chocolate and unsweetened baking chocolate contain higher amounts of theobromine and can be more dangerous than milk chocolate.
6. Coffee and tea: These beverages contain caffeine, which can be toxic to cats.
7. Fatty foods: Foods that are high in fat can cause pancreatitis in cats, a potentially life-threatening condition.
8. Cooked bones: Cooked bones can splinter and cause blockages or tears in a cat’s digestive system.
9. Fish that contain high levels of mercury, such as tuna, should be avoided as well.

It’s also important to note that cats require a diet that is high in protein and low in carbohydrates. Some commercial cat foods contain high levels of carbohydrates, which can lead to obesity and other health problems in cats. So, be sure to read the ingredient labels carefully when choosing a food for your cat.

Always be careful and consult with a veterinarian if you have any concerns about your cat’s nutrition, They will give you more specific information based on your cat’s individual needs.