that would be called "inbreeding" if i am not mistaken. Their bloodlines are the same so it takes a lot of knowledge to make it work...you have to know their genetics well!! Some breeders from many different breeds use this "method" (inbreeding and line breeding) but the same way you can have good results, there is also a big chance of problems...but i donnou too much about it. Lets wait and see what our breeders and more experienced friends have to say
