A capture cage includes a cage structure with a cage door, a pedal pivotally connected in the cage structure, a rotation member moving with the pedal, a suppression member located adjacent to an operation rod, and an induction lever pivotally connected to a top face of the cage structure. When the cage door is open, an inducible member of the cage door is confined by the inductive lever the induction lever is restrained by the suppression member and is located adjacent to a head portion of the operation rod and the pedal is suspended when the rotation member is supported by the operation rod. When the pedal is tilted, the rotation member separates from the operation rod the head portion of the operation rod pushes the induction lever away from the suppression member and the operation rod moves downwardly and the inducible member is released and the cage door closes.