
Did you see your puppy's mother ? Normally you should get a pedigree, diet sheet, insurance & the KC papers if they have arrived
You can check with the KC if you know the name of your puppy's mother to see if a litter has been registered
My last puppy hadn't been registered when I got him as his breeder was waiting the KC confirming his father had been made up to a Champion before registereing the litter(his father won all three CC's after mating my boy's mother)& also I know the breeder very well & an trust her
If the puppies were advertized as KC registered & they are not it is up to the Trading Standards to persue the breeder through the courts
As to the hernia they are quite common & as long as it is not really huge or large it's nothing to worry about
As to price Cavaliers are a very commerial breed & you can be asked for really silly prices for a pet bred puppy whose parents haven't had any health checks
If your puppy's is KC registered the health checks will be on the registration certificates
Why would you have to part with your puppy ?