Welcome to the website that you'll find all the answers to your sloth quesitons.
Take a quick glance at this great picture as well!
Sloth's are slow because of their low nutritional diet of leafy plants and their slow metabolisms. This causes sloth's to be frugal with their energy use, and so it results in that they don't wander far from their home.
Sloths mainly eat buds, leaves, and tender shoots. But unlike other species of sloths some will eat vast ranges of insects, nestlings, bird eggs, lizards, and carrion. Two of these species that do are Hoffmanns Two-Toed Sloth and the Linnaeus Two-toed Sloth.
Sloths can be encountered in areas around Central and South America. Some great places to look for them are in Costa Rica and Peru. They love to live in dry trpoical rainforests. A great place to see them if you're not willing to go deep into the rainforest is La Fortuna, Costa Rica. You will also get great views of the two volcanoes there. Arenal, which is active, and Chato, which is dormant. A trail that is a nice place to go to see sloths and other wildlife including basilisk lizards, snakes, toucans, is the Bogarin Trail. It has 1.24 miles of walking trails. It is a great way to go and see wild animals without disturbing their daily buissneses.
What is that stuff you ask? Well, what it is is algae. You may think it's gross but it really isn't. These two living orgianisms form a symbiotic relationship with one another. While the algae gets plenty of water to survive due to how much water a sloth's fur collects and a free living space, the sloth in return gets camouflage and extra nutrients via dissipation and absorption through the hair and skin.