Are all big cats carnvores

Answer 1

All cats (big or small) are obligate carnivores (they must eat meat or die).

Answer 2

Yes, ALL cats, not just big cats, are strict carnivores. Domestic cats aren't all that different from big cats such as lions. They have exactly the same type of teeth that is perfect for tearing and rendering flesh and crunching up bone. Pet cats - like their wild cousins, get all their nutrition from meat-based proteins and fats, so feeding a pet cat food high in meat content and no grains or cereals is the best way to ensure your cat gets all the nutrition it needs.