* αρπακτικό (arpaktikó): This is probably the closest general translation. It means "predatory" or "rapacious," referring to an animal that seizes its prey.
* θηρευτής (thirevtís): This word means "hunter" or "predator," specifically referring to an animal that hunts other animals for food. It's a good choice for animals that actively hunt.
* σαρκοφάγο (sarkofago): This translates to "carnivore," which is a broader term encompassing all animals that eat meat. It's suitable if you want to emphasize the diet rather than the hunting method.
The best choice will depend on what kind of predator you're referring to. For a wild animal hunting its prey, θηρευτής (thirevtís) is likely the most accurate. For a more general sense of a creature that preys on others, αρπακτικό (arpaktikó) works well.