Hmm...Trixie and Cody tied 11 days (and 12 and 13 days) after Trixie began heat. Apparently they did something right, huh? Our vet and breeder-pal told us this time would lessen the chance of a runt and she would be most fertile then. JMO, but maybe she isn't ready now since she had a litter in April. Maybe she should skip a heat? Just me...