In order to determine the prevalence of Toxocara canis Werner, 1782, Ancylostoma caninum Ercolani, 1859 and Isospora canis Nemeseri, 1959 in street dogs at the Bogota Zoonosis Animal Shelter, seventy pooled fecal samples from cage floors were collected. Each pooled sample corresponded to one of 11 localities since the dogs were caged according to locality. Three serial samplings were performed. Each pooled sample was evaluated macroscopically and microscopically using qualitative and quantitative parasitological techniques to determine the presence of helminth eggs or oocysts. A total of 88,57% (n= 62) of the samples were parasite positive: 52,9% were positive for A. caninum; 7,1% for T. canis; 24,3% showed mixed infections of A. caninum and T. canis, 1,43% were positive for A. caninum, T. canis and I. canis and 2,9% were infected by A. caninum and I. canis. The pooled fecal samples from...