Use a Griffin and Crossbow to lure it to a taming pen. Also grabbing whatever small creature it's trying to eat after hitting it will really piss it off to chase you. Griffins also have perk of not getting feared by it's roar.
It really is that simple though, they can't reach you or your flier on a big enough rock, so if you don't want to make a trap you can just shoot down from a rock or cliff once the carnos are dealt with. Be ready for a goose chase once it starts running.