The Syrian Camel, one of the largest camelids known, towering up to 4 meters, dwarfing regular antelopes and the lions and leopards, the former of which might have hunted it.
I was playing this yesterday, it says it's 14,000km squared. So I gave it a try and it was insane! It set me off was seeing a whole massvie mountain range! This is only ONE of many mountain ranges in game. And this is on a PS3!