behavior/neurological
head tossing
(
J:75619
)
• described as head weaving
|
growth/size/body
• described as small in size
|
hearing/vestibular/ear
• developmental defect in timing of the fusion of the different regions of the semicircular canal
|
• truncation of lateral canal with occasional absence of lateral ampulla
|
• variable penetrance of defects including small or absent canal and ampullae; variability often noted within left and right ears of same animal
|