attack dog

Noun

 * 1) Any dog bred, trained or used for the purpose of attacking a target, either on command or on sight; trained either as a specialized form of police dog or a security force dog.
 * 2) A dog used in the bloodsport of dogfighting.
 * 3)  A person who engages in rhetorical attacks on behalf of another.
 * 4)  A person who fights physically on behalf of another.
 * 1)  A person who fights physically on behalf of another.

Translations

 * Finnish: hyökkäämään koulutettu koira
 * Japanese: 攻撃犬
 * Malay: anjing penyerang
 * Swedish: kamphund