I disclose an apparatus, comprising at least one sensor configured to receive at least one signal indicative of a proximity of a first animal, at least one environmental signal, or both； a processor configured to detect a sufficient proximity of the first animal, a favorable environmental condition, or both from the received signal or signals, and emit a triggering signal in response to the detection； and an audio playback device configured to receive the triggering signal and emit a call of a second animal in response to the triggering signal. I also disclose a system comprising the apparatus and a trap； and a method of luring an animal.
