An apparatus for the capture and electrocution of pest animals, the apparatus comprising: - a casing defining a two-storey structure inside it, with an upper level, comprising an elongated killing chamber with a feeder at a first end of the killing chamber containing food bait, and an entrance at a second end opposite the first end, a lower level, with a bin for the collection and temporary storage of the corpses of killed pest animals, - electrocution means comprising an electric accumulator, a high voltage transformer connected to the electric accumulator, a plurality of electrode plates located in the killing chamber and electrically and selectively connectable to the high voltage transformer, with an activation member for activating the electrocution means associated with the feeder; characterized in that the apparatus further comprises a rotor comprising a rotatable shaft extending along a horizontal axis inside the casing at an intermediate height, the rotor having four axial walls arranged orthogonally to one another along the rotatable shaft, wherein each wall of the four axial walls has a face having three electrode plates (31, 32, 33) of said plurality of electrode plates arranged consecutively in an axial direction, the rotor being temporarily lockable in one of four predetermined angular positions in each of which one of the four axial walls is arranged horizontally and has its three electrode plates facing upwards to form part of a floor of the killing chamber; the electrocution means further comprise three stationary electrical contacts; and each axial wall of the rotor is provided with three movable electrical contacts, each connected to a respective one of the three electrode plates located on a same axial wall, the three movable electrical contacts being temporarily and simultaneously connectable to respective stationary electrical contacts when the axial wall is temporarily blocked horizontally with its three electrode plates facing upwards. - a casing defining a two-storey structure inside it, with an upper level, comprising an elongated killing chamber with a feeder at a first end of the killing chamber containing food bait, and an entrance at a second end opposite the first end, a lower level, with a bin for the collection and temporary storage of the corpses of killed pest animals, an upper level, comprising an elongated killing chamber with a feeder at a first end of the killing chamber containing food bait, and an entrance at a second end opposite the first end, a lower level, with a bin for the collection and temporary storage of the corpses of killed pest animals, - electrocution means comprising an electric accumulator, a high voltage transformer connected to the electric accumulator, a plurality of electrode plates located in the killing chamber and electrically and selectively connectable to the high voltage transformer, with an activation member for activating the electrocution means associated with the feeder; characterized in that the apparatus further comprises a rotor comprising a rotatable shaft extending along a horizontal axis inside the casing at an intermediate height, the rotor having four axial walls arranged orthogonally to one another along the rotatable shaft, wherein each wall of the four axial walls has a face having three electrode plates (31, 32, 33) of said plurality of electrode plates arranged consecutively in an axial direction, the rotor being temporarily lockable in one of four predetermined angular positions in each of which one of the four axial walls is arranged horizontally and has its three electrode plates facing upwards to form part of a floor of the killing chamber; the electrocution means further comprise three stationary electrical contacts; and each axial wall of the rotor is provided with three movable electrical contacts, each connected to a respective one of the three electrode plates located on a same axial wall, the three movable electrical contacts being temporarily and simultaneously connectable to respective stationary electrical contacts when the axial wall is temporarily blocked horizontally with its three electrode plates facing upwards. characterized in that the apparatus further comprises a rotor comprising a rotatable shaft extending along a horizontal axis inside the casing at an intermediate height, the rotor having four axial walls arranged orthogonally to one another along the rotatable shaft, wherein each wall of the four axial walls has a face having three electrode plates (31, 32, 33) of said plurality of electrode plates arranged consecutively in an axial direction, the rotor being temporarily lockable in one of four predetermined angular positions in each of which one of the four axial walls is arranged horizontally and has its three electrode plates facing upwards to form part of a floor of the killing chamber; the electrocution means further comprise three stationary electrical contacts; and each axial wall of the rotor is provided with three movable electrical contacts, each connected to a respective one of the three electrode plates located on a same axial wall, the three movable electrical contacts being temporarily and simultaneously connectable to respective stationary electrical contacts when the axial wall is temporarily blocked horizontally with its three electrode plates facing upwards.