A cat, a carnivorous creature
A carnivore was a lifeform with a diet consisting mainly of meat, whether from animals living or dead. Examples included the carnivorous rastipod, the Kzinti and the Mugato. (DS9: "Progress"; TAS: "The Slaver Weapon"; TOS: "A Private Little War")
In 2151, T'Pol referred to Humans as "impulsive carnivores." (ENT: "Broken Bow")
Contrary to this statement, Humans were also described as omnivores by the Kzinti in The Slaver Weapon.
In his 2369 Ode to Spot, Data noted that Spot was an "endothermic quadruped, carnivorous by nature." (TNG: "Schisms")
According to Data in 2370, early primates on Earth had often been the prey of larger carnivores and therefore a heightened instinct of awareness. (TNG: "Genesis")
The Alshain were culturally offended by the presence of carnivores. (DIS: "Kobayashi Maru")