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Definition 2025

attack dog ‎(plural attack dogs)

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.
A dog used in dogfighting; a bloodsport.
A person who engages in rhetorical attacks on behalf of another.
- 2001, Mark Jaffe, The Gilded Dinosaur, p. 146:
  It was, however, as Charles Darwin's alter ego, an attack dog for the theory of evolution, that Huxley gained his greatest notoriety.

dog trained to protect or attack targets