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We investigate global bifurcations due to symmetry-breaking and we detect strange attractors via a mechanism called Torus-Breakdown. We explain how an attracting torus gets destroyed by following the changes in the unstable manifold of a saddle-focus. <\/jats:p><jats:p> Although a complete understanding of the corresponding bifurcation diagram and the mechanisms underlying the dynamical changes is out of reach, we uncover complex patterns for the symmetric family under analysis, using a combination of theoretical tools and computer simulations. This article suggests a route to obtain rotational horseshoes and strange attractors; additionally, we make an attempt to elucidate some of the bifurcations involved in an Arnold tongue. <\/jats:p>","DOI":"10.1142\/s0218127421300299","type":"journal-article","created":{"date-parts":[[2021,8,13]],"date-time":"2021-08-13T13:11:45Z","timestamp":1628860305000},"page":"2130029","source":"Crossref","is-referenced-by-count":6,"title":["Torus-Breakdown Near a Heteroclinic Attractor: A Case Study"],"prefix":"10.1142","volume":"31","author":[{"given":"Lu\u00edsa","family":"Castro","sequence":"first","affiliation":[{"name":"Center for Health Technology and Services Research (CINTESIS), Faculdade de Medicina da Universidade do Porto, Portugal"},{"name":"School of Health Sciences, Polytechnic of Porto, 4200-319 Porto, Portugal"}]},{"given":"Alexandre","family":"Rodrigues","sequence":"additional","affiliation":[{"name":"Centro de Matem\u00e1tica da Universidade do Porto, 4169-007 Porto, Portugal"}]}],"member":"219","published-online":{"date-parts":[[2021,8,13]]},"reference":[{"key":"S0218127421300299BIB001","first-page":"1","volume-title":"Nonlinear Dynamics and Turbulence","author":"Afraimovich V. 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