This study evaluates the occurrence of gastrointestinal and pulmonary parasites in 266 domestic cats through stool examinations performed in 2018. The cats were adults of several breeds, with tutors and residents in the city of Porto Alegre, Rio Grande do Sul, Brazil. The samples were processed by the methods of Baermann, Willis-Mollay, Lutz and Faust. The occurrence of parasitized cats was 21% (56/266). The parasitic genera were identified: Giardia (26,8%), Toxocara (26,8%), Cystoisospora (17,8%), Ancylostoma (5,3%), Entamoeba (3,6%), Dipylidium (1,8%), Toxocara/Cystoisospora (1,8%), Toxocara/Dipylidium (1,8%) and L1 larvae of Aelurostrongylus abstrusus (14,3%). The occurrence of parasitic infections was significant for zoonotic parasites.