Cats can eat goldfish crackers in very small, infrequent amounts without immediate harm, as the ingredients are not toxic in tiny quantities. However, goldfish crackers provide no nutritional value for cats and contain ingredients such as salt, artificial flavorings, and potentially toxic substances like onion powder, which can be harmful if consumed regularly or in larger amounts. Eating too many crackers could lead to gastrointestinal distress, allergic reactions, or obesity. Therefore, it is best to avoid feeding cats goldfish crackers and instead provide them with species- appropriate treats and food. If a cat does consume goldfish crackers and shows any adverse reactions, consulting a veterinarian is recommended.