A carnivore is an animal with a diet consisting mainly of meat, whether it comes from animals living or dead.
In his "Ode to Spot," Data noted that Spot was an "endothermic quadruped, carnivorous by nature." (TNG: "Schisms")
In 2151, T'Pol referred to Humans as "impulsive carnivores." (ENT: "Broken Bow")