Ears
Floppy Ears
Alternative Names: Drop ears, Rose ears, Base erect ears, Button ears, Tipped ears

The Floppy Ears variant is associated with ears that fold due to decreased cartilage stiffness. The variant is located in the MSRB3 gene.
More Info
Did you know?
The Norwegian Lundehund has the special ability to fold their ears shut at will while still keeping them upright, to protect against cold or wind. Handy when hunting birds in Nordic winters!
How it works
Dogs with zero copies of this variant are more likely to have permanently upright or prick ears, and fully folded ears are more likely with two copies inherited. Please note however that many genetic variants influence ear carriage. Dogs with some cartilage stiffness to their ears can sometimes raise their ears upright when 'at alert' but will flop down when relaxed.
Health implications
Despite the common myth, floppy ears do not cause ear infections, but dogs with floppy ears should have them checked regularly for signs of infection or redness.
Prevalence
5 in 10 dogs
have one or more copy of this genetic variant in our testing.
Technical Details
Gene | MSRB3 |
---|---|
Variant | C>T |
Chromosome | 10 |
Coordinate | 8,085,469 |
All coordinates reference CanFam3.1
References & Credit
Credit to our scientific colleagues:
Vaysse, A., Ratnakumar, A., Derrien, T., Axelsson, E., Pielberg, G. R., Sigurdsson, S., … Webster, M. T. (2011). Identification of genomic regions associated with phenotypic variation between dog breeds using selection mapping. PLoS Genetics, 7(10). View the article