hi i think it is about 18 weeks but you can check on livershunt.com they have their own web site and ask mary elizabeth she can tell you everything you need to know about shunts and procedures , but in the meantime to help your little one to not have further symptoms feed him a meat protien free diet get him on some vegetables and rice my livershunt pup only ever showed symptoms if she was fed meat you can also give baby rice puddings they love that but try had feeding him too it would be best to take him to the vet though he might be able to give you some hepatic puppy food good luck im praying he will be ok |