[Chihuahua] Is this defect congenital or womb-related?

I raise chihuahuas. Frankly this sounds like a case of inbreeding. There may be other problems that don't show up until later on. If you take her, be prepared to lose her as a young pup/dog and there may be huge vet bills. I do not think this deformity happened in the uterus, altho I did have a chihuahua born with a very crooked tail that was a result of too many pups in the litter(only 6). Still this type of deformity is usually from bad breeding. 10 pups is a huge amount pf pups for a chihuahua. Specially if she was a small chihuahua which the show dogs usually are.