The charismatic and slow three-toed sloth is just one of many animals species that Smithsonian scientists study, from within our vast collections to live animals at our research centers and National ...
Montgomery, G. Gene and Sunquist, M. E. 1972. "Resting respiration rates of free-living three-toed sloths." Mammalia, 36, (3) 530–532.
Sloths always seem to have a relaxed smile on their lips, making them appear friendly and cute. The natural habitat of these leisurely tree dwellers is the tropical rainforests of Central and South ...