Brother/sister mating

Question
We have two dalmatian mix puppies about 7 months old.  She came into heat and her brother has mounted her several times.  It was not my intention to let this occur, but now that it has what would be the best thing to do ? should I let her have he litter or have her aborted.

Answer
Hi Dee

A few things I find disturbing, 7 months old, brother and Dalmatian.

First a first heat is young to be breeding. Neither dog has developed either physically or mentally.

When doing an inbreeding, the dogs should be SUPERIOR in every way.  Any hereditary defects are going to come out ten-fold in their off-spring.  Dalmatian have so many health issues that this is a major concern and health risk to the pups.

My advise, take the female to the vet immediately for a treatment of Oxytocin, equivalent to the morning after pill, and have one or both fixed.

Good luck