A case of a salivary gland mucocele in a dog causing nonpainful exopthalmos with dorsolateral deviation of the globe and protrusion of the third eyelid. Diagnosis was made via ultrasound and confirmed with computed tomography. Aspiration of the cystic material along with injection of a sclerosing agent, 1% polidocanol (Aethoxysklerol), was used to destroy the mucocele. Follow-up monthly examination post injection confirmed resolution of clinical signs to date, namely abnormal globe position, with no complications observed.