sorry tried to register kept saying error  anyway this hernia is like a fat ten pence piece  bubble and is very noticable when she has eaten the person she got it from was a friend who had a  unplanned litter and mum was given the dog shes not going to breed from her just wanted to know about the hernia as boy pup has it as well and wanted to do whats best . thanks again.

Have you read the article at the link I posted ?

Hi, my 3 year old cavalier king charles spaniel has an umbilical hernia which he has had since he was a puppy.  The breeder did inform us about it but was told that it should not cause any problems and even may close up.  He still has the hernia which is about the size of 10p coin but this does not cause him any problems whatsoever and even the vet said that it is okay if it does not cause him any problems.  We have therefore decided to leave it and not operate. 

if it isn't causing any problems to the dog then he should be fine. just keep an eye on him