The study brings together clinical and paraclinical (mycological) investigations in pets (dog, cat, guinea pig, chinchilla, small rabbit) with dermatological disorders. The fungal strains isolated from these animals were: Microsporum canis (the only in cat), Microsporum canis, Microsporum distortum and Microsporum gypseum (in dog) and Trichophyton mentagrophytes (in guinea pig, chinchilla, and small rabbit). Skin lesions consisted in focal or multifocal alopecic areas with central scaling, mild erythema and pruritus, often localized on the face and the limb. Microscopical examination of the hairs and scales revealed the typical sheaths of microconidia (often in infections with M.canis) and the strings of arthroconidia in one case of trichophytosis in guinea pig. Cultural and microscopical examination of the dermatophytes isolated on Sabouraud and Mycoline media showed the inability of M. distortum to growth in the presence of cycloheximide compared to the other dermatophytes; the plenty of M. gypseum macroconidia than M. canis ones and the presence of winding hyphae and acladium clustering for Trichophyton mentagrophytes species. Beside the mycological exam, history, clinical signs and differentials are also useful tools in diagnosis of dermatophytosis.