Breeding father to daughter does not mean that there will be health issues with the pups. This is the preferred method of inbreeding (when done)... father to daugher or mother to son (you shouldn't breed brother to sister).
You can have the pups DNA'd. Ask your vet about this.
More than likely they will be just fine. Best of luck with your new puppies!!
__________________ Joanne Gurley's Yorkies |