“…Also, the same type of skeletal malocclusion was noted in 1 old animal. Supernumerary incisor teeth have also been observed before in about 10% of domestic ferrets (Church 2007, Powers & Brown 2012, Maurer & Fox 2014, similar to the population we describe here. Congenitally absent mandibular second molar teeth have previously been reported in ferrets (Church 2007 ), and were also found in this study, along with sporadic presumed congenital absence of mandibular first incisor and maxillary second premolar teeth.…”