the hairs on the back of some animals, or the feathers on the back of the neck of some birds, that rise when the animal or bird is frightened or about to fight
Idiom
make (someone's) hackles riseidiom(alsoraise (someone's) hackles)激怒（某人）
to annoy someone
The president's speech has raised hackles among members of the opposing party.总统的演说激怒了反对派。