Originally Posted by susie-4964:
“The problem with dogs is that there's much more genetic variation in the breeds. Your basic cat is pretty much the same throughout the different breeds, but with dogs you get everything from the Yorkie to the Irish Wolfhound. So it's much easier to accidentally breed in an undesirable characteristic while seeking to improve the appearance.”
Small dogs are popular and getting miniature/toy versions is done by breeding from the smallest pups, sometimes the weakest or runt. That does not seem the route to a healthy animal yet all the miniature Yorkies and Dachshunds owned by aunts and cousins have reached their late teens. They do not seem to have suffered the problems suffered by some breeds from being fashionable, then overbred to meet demand.
Quote:
“There are a few problems with certain breeds of cats, for example Manx cats have a short backbone, which can cause problems with internal organs, and some strains of Maine Coon can suffer heart trouble, but it's much less common than with dogs.”
I agree it is less of a problem but I suspect a lot of that is down to the popularity of the common British shorthair or moggie. Bengal cats have become very popular in a short time, a vet nurse told me they are seeing some sickly animals as a result of very young cats churning out 2 or more litters a year.
My favourite type of cat, Siamese, have suffered from breed standards that allowed some ugly variations with big noses and cross eyes, long thin faces to be accepted and to win Championships. The original Siamese had lovely faces, some breeders still specialise in the "old fashioned" look.