CR2 Mammoths - What's the Highest?

Caleb: We're escorting two woolly mammoths up as tribute. Caduceus: I'm going to keep an eye on the door in case other things are coming back. They'll be very angry because there's a bunch of dead yet. Ford: You can't like funder phosphorous grenade, you know? It's a good trick. Caleb: There is actually, there's a longsword amongst there. And if we're going to just keep talking here, we should be prepared to fight.