Why Buffalo Has Horns - S2.E18

You see, there was a time when Buffalo didn't have horns. He had long shaggy hair and he lived near the swamp. But then one day the swamp moved and Buffalo had to find a new home! The swamp grew and grew and soon all the horned animals who lived on the plains risk losing their home too. So Buffalo decided to save the day and push back the muddy swamp.