Yes, cats can eat a small amount of plain turkey liver, but only as an occasional treat and in very limited quantities. Too much liver over time can cause vitamin A toxicity and digestive upset, so it should not be a regular part of their diet. Basic guidelines:

• Safe in moderation: A tiny piece now and then is usually fine for a healthy adult cat.
• Must be plain and cooked: No seasoning, oil, onions, garlic, butter, or sauces.
• Very small portions: Think a pea- to thumbnail-sized piece for an average cat, not the whole liver.
• Avoid if your cat has health issues: Cats with pancreatitis, kidney disease, or sensitive stomachs may react badly to rich organ meats.

If your cat ever shows vomiting, diarrhea, limping, stiffness, or loss of appetite after eating liver, or if it has eaten a large amount, contact a vet promptly.