User blog comment:Belthazar451/Tactics: Earning money from selling monsters/@comment-13541920-20130727054456/@comment-5832451-20130729042011

Well, since you can't breed a Wubbox (or the Ethereals) yet, the Noggin is technically in first place. And as Belthazar451 said, you breed it by 'accident' (with 100% certainty) or by 'failing' (depending on your perspective). Certainly buying and selling for a loss doesn't earn you any money. :)

But breeding Noggins for money is also a silly idea, unless you plan on playing literally around the clock (just like saying Noggins make the most per bed per minute is technically true but realistically impossible).