The presence of dermatophytes was studied in stray and house dogs in Cali, Colombia, using a sterile square of wool carpet rubbed on the hair. A total of 251 animals were studied, 86 stray and 165 pet dogs. Dermophytes were found in 34 (13.5%) animals, 11 being stray and 23 house dogs. No correlation was found between these two groups, neither between age, sex, race or length of hair, and dermatophytes.The presence of lesions was the only factor that showed a significant statistical relationship with isolation of fungi (P