Savannah Patriarch
Cataclysm Classic - The Savannah Patriarch can be found in the Northern Barrens and as such quite easy to get a hold of, easy to find and being of fairly low level, not that hard to tame. Easy for both factions, but probably easiest for the horde, if your level is a bit low, I started from The Crossroads in the Northern Barrens - The biggest problem getting a hold of the Savannah Patriarch is actually the Great Divide, a annoying feature of Cataclysm, especially being a horde that loves questing ect. in the Barrens.
Savannah Patriarch https://wowpedia.fandom.com/wiki/Savannah_Patriarch
Northern Barrens https://wowpedia.fandom.com/wiki/Northern_Barrens
Crossroads https://wowpedia.fandom.com/wiki/Crossroads
Great Divide https://wowpedia.fandom.com/wiki/Great_Divide