Monday feels: Mary Jane the baby sloth, born at our National Zoo in 1964.Zoo staff, who hand-reared

Monday feels: Mary Jane the baby sloth, born at our National Zoo in 1964.

Zoo staff, who hand-reared Mary Jane, named the two-toed sloth long before it was determined that the baby was a male. He’s seen snuggling at 9 months old in this Smithsonian Institution Archives photo.

More about Mary Jane and the work of our staff in raising young animals.