There sits, on the branch of an imbauba, rolled-up in its peculiar attitude, a sloth, the very picture of indolence, with its head sunk between its arms.    From Wordnik.com.  [The Western World Picturesque Sketches of Nature and Natural History in North and South America] Reference

Now and then we caught sight of a sloth rolled up on a branch of an imbauba tree, on the leaves of which the creature feeds; while butterflies of most brilliant hues and enormous dragonflies were flitting about in the sunshine.    From Wordnik.com.  [The Wanderers Adventures in the Wilds of Trinidad and Orinoco] Reference