The Sloths had to flat hump it to get to South America
Don't forget that back then, South America wasn't all that far away as the continents had yet to separate. So they had a mere 2000 or so miles to amble, and then they surfed the rest of the way as South America catastrophically sped its way across the Atlantic... you can almost feeel the wind sweeping back their ears as they trembled at the sheer exhilaration of continent riding...
Edited by cavediver, : No reason given.