[Yorkiemom1]

Originally Posted by OwnedByJezebel

Has she had an ultrasound and xray? (Sounds like you have had at least one of these done since you are aware that there is only one pup). Singletons get a lot more nourishment since they don't have to share and can end up being larger. You need to know if the pup is too large to pass through the pelvic ring and will have to be delivered by c-section. I am not a breeder, but if I were in your situation I would be in contact with my mentor and take Mom to the vet if I were worried about anything.