Board Thread:Speculation House/@comment-14138255-20140926004722/@comment-24994749-20140929205734

I  am 100% sure Zwei is some sort of combat dog trained to use its aura offensively and defensively in support of its hunter. The timing of its arrival to Beacon is just way too convenient for Taiyang not to have sent him deliberately because he knew his girls were causing shit.

Or maybe this is also all wishful thinking from my part since from a time before Zwei was introduced, part of my "Qrow is blind" headcanon included him having a guide wolf-dog that aided them in combat.