<p>Hepatic fasciolosis is a zoonotic disease caused by the liver fluke Fasciola. Hepatic fasciolosis can cause sudden death in asymptomatic animals due to high parasite loads associated with the presence of Fasciola. This disease has a worldwide distribution, so it is important to maintain prevention and control measures within the pastures or facilities in which the animals have contact, both their intermediate host and the parasite. This work seeks to describe the clinical case of a Norman breed bovine with approximately 4 years of age, gradual weight loss, anemia and diarrhea, for which samples are taken for laboratory analysis. Once the treatment was applied, a favorable evolution was obtained, but with a high possibility of reinfection. The analyzes carried out in the laboratory are a fundamental tool in obtaining the diagnosis of Fasciola, but if the pasture recovery process is not carried out, an effective treatment will not be possible.</p>