Protozoans are widely distributed, and several species may parasitize the digestive tracts of cats (Felis catus), and can be transmitted to humans. The present study aimed to evaluate the species and occurrence of gastrointestinal protozoans in cats in the city of Londrina, Paraná, Brazil. A total of 206 cat fecal samples were tested, of which 141 were from shelter animals, and 65 were from pets owned by local ...