hair? would it becaused by some kind of health problem? such as genetics, or thyroids, is something to worry about? is there any thing you can do to make the hair grow?please reply only from vets, techs, or breeders who have had similar problems,

genes. its all in the genes. what kind of dog is it? well the dog has a dominant gene for long hair but theres still that resessive gene for short hair. so in some cases the resessive can take part. thats like saying why does a red head mother give birth to a blonde daughter. its all in the genes of one of the parents. one of the parents has a short hair gene.

Well it depends if the mother dog had done it with a differnt bread. Like the genes put together might have made its hair grow long.