Se expone el caso clinico de un paciente canino mestizo de 9 anos de edad, que fue presentado a consulta medica en la clinica de pequenos animales de la Facultad de Medicina Veterinaria y Zootecnia de la Universidad del Tolima, por presentar una tumoracion en la mucosa oral, acompanada de disnea, halitosis y secrecion nasal, de acuerdo a los estudios para clinicos se determino la presencia de un Carcinoma de Celulas Escamosas (CCE). Abstract The clinical case of a racially mixed canine patient of 9 years of age is exposed, that was presented to medical consultation in the clinic of small animals of the Faculty of Veterinarian and Zootecnia Medicine of the Tolima University, presenting tumoracion in the oral mucous, accompanied by dyspnea, halitosis and nasal secretion. According to the studies for clinical the presence of a Squamous Cells Carcinoma was determined.