JACKSONVILLE, Fla. – It’s a great day to be lazy! October 20 is International Sloth Day. Sloths are great swimmers and can hold their breath for up to 40 minutes underwater. Sloths only go to the bathroom once a week and when they go, it’s in the same exact spot. Thanks to extra vertebrae in their spine, sloths can rotate their head 270 degrees in either direction.