The breeding of lop-eared rabbits has created animals more prone to ear and dental problems, similar to the way that short-muzzled dogs like pugs suffer
Source:
https://www.newscientist.com/article/2207197-floppy-eared-bunnies-look-cute-but-they-suffer-more-health-problems/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home