2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/161805We prove the existence of infinitely many periodic solutions and complicated dynamics, due to the presence of a topological horseshoe, for the classical Volterra predator--prey model with a periodic harvesting. The proof relies on some recent results about chaotic planar maps combined with the study of geometric features which are typical of linked twist maps.24 pages, 4 figuresDynamical SystemsClassical Analysis and ODEsPopulations and Evolution34C28; 34C25text