Chocolate contains theobromine, which is toxic to cats. Theobromine can cause vomiting, diarrhea, seizures, and even death.
Grapes and raisins can cause kidney failure in cats. Even a small amount can be harmful, so it's best to avoid giving them to your cat altogether.
Xylitol is a sugar substitute that is often found in gum, candy, and baked goods. It can cause a sudden drop in blood sugar in cats, which can lead to seizures.
Onions and garlic can cause anemia in cats. This is because they contain compounds that break down red blood cells.
Macadamia nuts can cause vomiting, diarrhea, tremors, and even death in cats. It's best to avoid giving them to your cat altogether.
Avocados contain persin, which is a toxin that can cause vomiting, diarrhea, and even death in cats.
Coffee and caffeine can cause increased heart rate, anxiety, and even seizures in cats.