User blog comment:Redglitch/How To Get Heatran (H.T.G.H) by redglitch/@comment-4700359-20130521142721/@comment-4700359-20130521232645

Believe me, I know it's an easy mistake to make. Nobody's sure why GameFreak made Heatran able to be male or female, but that doesn't change the fact that it's a legendary. The only legendary that can breed is Manaphy, and that's only for creating Phione Eggs.