Marauding
verb
To move about in roving fashion looking for plunder.
“a marauding band”
To go about aggressively or in a predatory manner.
To raid and pillage.
noun
Raiding and pillaging.
adjective
Raiding and pillaging
“a marauding band”
(of an animal) killing in wanton fashion.
“A marauding stoat entered the rabbit warren and killed fifteen bunnies.”
(of an animal) killing domestic animals.
“The marauding lion jumped the fence and killed the goat.”