Carnivores need to eat other animals to live. If a living thing needs to do something to live, then almost all cases, there is a very defensible argument for it being moral.
The argument is over whether a certain thing is moral or not. I argue that it is because carnivores need to do that to survive. Humans don't but does that affect whether that thing is moral or not?
Then you would have to argue that an omnivore eating meat is immoral while a carnivore eating meat is moral. I wouldn't enjoy defending that statement.
