There is a major difference between meat.....aka also known as beef, chicken, pork, lamb, fish.

Now make note of the following.....shellfish (oysters) have internal organs........equates to carbs. If you look at the internal organs of cows, chickens and pigs you will also notice those contain carbs as well.

Shellfish do contain carbs, where as meat....the fleshy parts of animals do not.