Petopia: Taming Owls for the Horde
http://petopia.brashendeavors.net/html/articles/tameguide_owl4horde.shtml
"Until you get to level 48, the only Owls available are the ones in the elven starting area. Getting one of those with a Horde character is doable, but will take several hours and a LOT of deaths."
Mania’s Arcania: It’s all about the (WoW hunter) pets! » Patch 2.3: Ghost Wolf?
http://www.maniasarcania.com/2007/11/20/patch-23-ghost-wolf
"Resourceful hunters wracked their brains thinking of ways to shorten the length of time it takes to cast Tame Beast"