Dogs born with deformities may be caused by many factors. Here are some possible causes:

Genetic factors: Dogs may carry certain genetic mutations or genetic defects that may cause Puppies develop deformities. This genetic problem may be inherited from the parent dog or may be caused by a mutation. Some breeds of dogs may be more susceptible to certain genetic diseases, which may manifest as defects such as limb loss and eye disease.

Malnutrition: If the dog does not receive enough nutrition during pregnancy, especially the lack of key nutrients such as calcium, phosphorus, and vitamin D. Substances may cause problems such as skeletal deformities in puppies.

Diseases and infections: During pregnancy, if your dog is infected with certain diseases, such as canine parvovirus, Toxoplasma gondii, etc., these pathogens may have a negative impact on the development of the fetus, leading to deformities or other health problems. .

Drug or toxin exposure: If the dog is exposed to certain drugs or toxins during pregnancy, such as chloramphenicol, mercury, etc. , these harmful substances may cause deformities or other health problems in puppies.