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.