predatory

characterized by plundering or pillaging or marauding; "bands of marauding Indians"; "predatory warfare"; "a raiding party"

living by preying on other animals especially by catching living prey; "a predatory bird"; "the rapacious wolf"; "raptorial birds"; "ravening wolves"; "a vulturine taste for offal"

living by or given to victimizing others for personal gain; "predatory capitalists"; "a predatory, insensate society in which innocence and decency can prove fatal"- Peter S. Prescott; "a predacious kind of animal--the early geological gangster"- W.E.Swinton