the previous 2 seasons my hobs who she lived with mated her...but I think because she had only just started in season she didn't produce any litters...not very scientific ..I confess the first time this happened it was an accident as I didn't separate her in time....the following year I thought I might just get away with it again...so it was done on purpose..maybe more luck than judgement...
where ever possible get a vasectomy hob to cover them