Pneumonia with septicemia caused by Pasteurella multocida was diagnosed in an immunocompetent patient exposed to a dog. This case is remarkable by two aspects: first the absence of visible cutaneous lesion, and second the localization and severity of the infection caused by P. multocida even though the patient was immunocompetent. P. multocida can cause respiratory and systemic infection, and it is a possible diagnosis in case of exposure to animals, even without history of bite or scratch. Furthermore, severe infections caused by this pathogen can occur in immunocompetent patients, so that the implication of specific host factors in the severity of the disease can be suspected. Genetic features could be one of these.