Verdict: No, toxic
Pizza is dangerous and potentially toxic for cats due to hidden ingredients like garlic and onions in the tomato sauce, which can cause severe damage to their red blood cells. Additionally, the high fat, sodium, dairy, and yeast dough can cause acute gastrointestinal distress, pancreatitis, or obstruction.
Garlic and onions contain organosulfur compounds that cause oxidative damage to feline hemoglobin, leading to the formation of Heinz bodies and subsequent hemolytic anemia.
N-propyl disulfide and thiosulfates