The laziest of animals is said to be the sloth, which may hang upside down by its powerful claws for days at a time. When removed from its usual perch -- a tree found in the jungles of Brazil -- the sleepy critter is just as content to relax on the ground. Its hooklike claws, extending far beyond the ends of its limbs, are perfectly adapted to tree life but make walking difficult. Here's one at a zoo in his favorite sport, relaxing. (Animals -- Sloth)

Photo is dated 1956.

Photo measures 10 x 8.25 inches.