Prick up one's ears means to become suddenly attentive, alert, or interested after hearing something significant. In poetry, the idiom gives listening an animal vividness, as though instinct sharpens before thought. It can describe curiosity, suspicion, fear, hope, or recognition. A character may prick up their ears at a name, rumour, song, footstep, or dangerous silence. The phrase is useful in poems about sound, secrecy, and attention, showing the moment when ordinary hearing becomes active listening.

Prick up one’s ears means listen suddenly and attentively, like an animal whose ears rise at a sound. In poetry, it can show curiosity, suspicion, hope, fear, or awakening interest. The idiom is bodily and animal-like, useful for linking human attention with instinct. It pairs well with whispers, footsteps, birdsong, rumours, and distant music. Students should note that listening here is active, alert, and almost involuntary.