The key to the sloth's 'slothfulness' has been discovered - they've evolved to use gravity to their advantage.
Source: http://www.cosmosmagazine.com/news/4568/the-decoding-slowness-how-sloths-perfectioned-energy-saving
Amy Smart Ana Beatriz Barros Ana Hickmann Ana Ivanovi Ana Paula Lemes Ananda Lewis Angela Marcello
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