Costa Rica is home to two of the world's six sloth species: the three-toed sloth and the two-toed sloth. Although both share a relaxed lifestyle, they have fascinating differences. Knowing how to tell them apart will enrich your experience and allow you to appreciate our country's incredible biodiversity even more. Let's start with the keys to identifying them. This is the most obvious difference, but with a catch. The three-toed sloth has three claws on its front and hind limbs. The two-toed sloth has two claws on its front limbs, but three on its hind limbs! Therefore, the key is to always look at the 'hands' or forelimbs.