An apparatus to attract predatory animals is described. The apparatus includes an end-effector that includes an elastic member with non-homogenous elastic properties. The apparatus further includes a fixture attached to a proximal end of the elastic member. In addition, the apparatus includes an actuator attached to the fixture generates a transversal wave excitation. The transversal wave excitation propagates from the proximal end of the elastic member to a distal end of the elastic member.
