rapacious

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"

excessively greedy and grasping; "a rapacious divorcee on the prowl"; "ravening creditors"; "paying taxes to voracious governments"

devouring or craving food in great quantities; "edacious vultures"; "a rapacious appetite"; "ravenous as wolves"; "voracious sharks"