
I'll be delicate here - I think some show people don't admit their dogs have it as it is a slight defect, and there are products that can, shall we say, cure it very quickly, but then it comes back the next day!!! ;) As for whether it is hereditary, I'm not sure - as I said, my bitch gets it, so does the dog I used, but my puppies have been okay up to now, as far as I know, and they are now two.