After the flood God decided on the correct relationship between fish and fowl, man and beast. It takes the form of a blessing. The only prohibition was drinking their actual blood or making it into those dreadful sausages so popular in Scotland.
Genesis 9:1-4 And God blessed Noah and his sons, and said unto them, Be fruitful, and multiply, and replenish the earth. And the fear of you and the dread of you shall be upon every beast of the earth, and upon every fowl of the air, upon all that moveth upon the earth, and upon all the fishes of the sea; into your hand are they delivered. Every moving thing that liveth shall be meat for you; even as the green herb have I given you all things. But flesh with the life thereof, which is the blood thereof, shall ye not eat.
Lions are not excluded. Just imagine if they had been! They'd neither fear nor dread us and would be roaming around like cows in India eating babies and messing everywhere. Not all animals are vermin but this pest species has been preying on us (or at least attempting to) for centuries. How in that case is it any different from smallpox?
I've heard that savages like to imbibe their blood. Is that true?