Does Carnage Have a Tongue?

If your mind immediately jumps to Venom: Let There Be Carnage, your answer would be yes. He has a substantial tongue, a big, wicked fleshy mass surrounded by fangs, much like Venom in that movie and in most comics.

Does carnage have black teeth?

Carnage's second appearance is similar to the first version, however the lines around its body have a different pattern, the hands have been reshaped into claws, and the mouth and eyes are more jagged than before. The teeth are now black as opposed to white, and the mouth glows a bright red.

Why does carnage hate Venom?

It's part of the evil symbiotes's culture to raise the offspring with hatred. The Venom symbiote did changed quite a lot, but that's how it behaved back then, and that's why it hated its offspring.