Everyone's favorite pug, Blizzard Community Manager Crithto, posted this morning about some long-awaited changes to several pets. This included our beloved Pierre, the engineering cooking stove of legend. While, in the past, he was not cageable or tradeable, and was also BoP and unique, you can now have as many Pierres as your heart desires. As long as your heart desires no more than three. He's also tradeable, which is great news, and as Crithto adds, this also applies to Rascal-Bot. He fades into insignificance next to Pierre, though.
There are already reports on Wowhead of the hotfix having come into action, so get on and get crafting! The world needs more Pierre.