HI there Please keep this baby this baby in a crate or hold her constantly.. This is what happened to my Babybear.. What you are talking about is Atlontoaxial Instability or Subluxating. My BB was internally decapitated (neck was no attached to his spine) He became paralyzed.. Your vet is right you baby should not be alive so please as soon as you can get her into a specialist please do.. I mean ASAP.. Please go to Babybear's dogster page and please read I have a lot of information on this.. SO if you need anymore information please let me know..PM me if you would like and I will give you my email addy for more information.. Here is Babybear's webpage
Dog profile for Babybear, a male Yorkshire Terrier
Please treat your baby like a china doll that can break at anytime..She is very fragile..I do not want to scare you but I have been in your shoes.. This is a congenital defect or a aquired defect.. How old is Zoey? When did you notice something wrong with her neck.