The present report describes the morphological features of a spontaneo
us, bilateral, complex odontoma of the incisor teeth in an 87-week-old
male Swiss mouse (Crl:CD-1(ICR)BR). This report constitutes the secon
d report of an odontogenic tumour in a Swiss mouse and the first descr
ibing a bilateral complex odontoma in this strain of mouse. The report
emphasizes the importance of thoroughly examining the oral cavity for
dental tumours.