This is a report of canine tegumentary leishmaniasis in Morada das Aguias (in the Serra da Tiririca mountain range), Maricá, Rio de Janeiro State, Brazil. A clinical, serological, and parasitological survey was performed in 83 dogs. Eleven (13.2%) were positive on indirect immunofluorescence (IIF) and 30 (36.1%) on enzyme-linked immunosorbent assay (ELISA). Ulcerated cutaneous or mucosal lesions were observed in 18 (n = 83; 21.7%) dogs. Leishmania was isolated from 11 of the animals. The disease occurrence and local occupational characteristics are discussed.