The reason why I am asking this Question is because ,there are now many Cavaliers whose Heads look like King Charles Spaniel Heads.
Could this be the reason why some Cavalier Breeders are so Up in Arms when it mentioned that the Cavaliers' Heads are Smaller than they were around 30 years ago.
It is now said by Researchers that CM that at least 90% of Cavaliers can have CM ,which causes significant Clinical Problems ,including Pain and Progressive Neurological Defects ,including SM.
I don't know whether King Charles Spaniels also suffer from CM ,but they do suffer from SM and have a Significant Occurence of Hydrocephalus.
If there are Cavaliers being mated to KCS,could this be the Reason why there are changes in the Volume of the Occipital Skull that Result in Cerebellar Compression and Herniation in our Cavalier Breed , maybe the Cavaliers' Heads have become Smaller because of being Mated to KCS.
Food for Thought.