Why did the sloth cross the road? To (kind of) get to the other side, at some point -- when he's not sleeping throughout the process. Sloth crossings on Costa Rican roads may not be the most uncommon event, but the best video -- of the famous crossings -- is this particulary slow-moving personality who seems to suffer from narcolepsy. Watch the sloth literally nod off during his venture, startled awake from his nap by a fast-moving truck.