We can't help but smile. Ah, sloths. Those Mona Lisa expressions. Their quirky love for being upside down. And the kind of chill attitude we all wish we had at times. Here they are in candid photographs in all their adorableness, living their best life in sanctuaries in Costa Rica. Captured by the photographer and all-around sloth expert Lucy Cooke, they're hanging in trees, lounging in hammocks and baskets, and cozying up in snuggly little piles. Plus fascinating facts: The widespread avocado tree was originally propagated throughout South America thanks to the prehistoric 20-foot-tall giant ground sloth! [alternate fact: A sloth's slowly digested stomach contents can make up around a third of its body weight!] New plastic-free packaging!