hi Emma, i know someone who has pugs she has had them for years but she has never bred herself it is just to risky not only for the bitch & puppies but because they are prone to so many genetic diseases over 30, she dosent think its worth the risk. If you do breed yours please get them tested for hip & elbow dysplasia, thyroid disease, genetic eye diseases, cardiac test & liver function test responsible breeders test for these. Heres something about the risks of pug breeding PugSavers - Should I Breed My Pug?