Definition & Meaning of "make one's hackles rise"

What is the origin of the idiom "make one's hackles rise" and when to use it?

The idiom "make one's hackles rise" has its origins in the behavior of animals, particularly dogs and certain birds, whose hackles or raised hairs on the back of their necks or shoulders are a visible sign of agitation or arousal. The term "hackles" specifically refers to the long, erectile hairs along the spine of certain animals that can stand on end when they are feeling threatened or aggressive. The phrase is commonly used during arguments, debates, or contentious discussions where individuals feel attacked, insulted, or challenged. It can also be used in situations where someone feels threatened or offended, leading to a heightened emotional state.