Monocephalus dipygus EN CACHARROS: REPORTE DE DOS CASOS.

It is described two cases of congenital posterior duplication in puppies. This malformation also known as Monocephalus dipygus refers to individuals doubles, characterized by having the head and thorax fused into a single and symmetrical duplication of pelvis and hind limbs. The first case, showed four former members, four posterior members and palatosquisis. The second case, showed only two former members and four posterior members. In general, both cases can be related as twins symmetric fused. [ABSTRACT FROM AUTHOR]