Belly bands will not prevent conception. The best thing to do would be to keep them completely seperated. Has your male ever been used for stud, I only ask because if he hasn't, his behavior is very unusual for a virgin male.
You're wise to not want to breed your female until she's older (approximately 18 months of age).
Since this breed is very unpredictable to size of the offspring. But, dependent on what you want to produce and because they are both beyond the Yorkie Standard) I'm not sure of breeding these 2 pups would be the best thing.
__________________ Mardelin Yorkshire Terriers |