Occasionally, sloths have been known to give birth to twins. Since there is only enough room on the female’s chest for one baby, and the sloth’s very slow metabolism only provides enough resources for one,  the weakest twin will usually be rejected and abandoned.

Are sloths drinking more water than before? Is the smoke from cars affecting the delicate micro-ecosystems of green algae and moths that sloths have in their fur? Are sloths affected by artificial lights?

Nacho, a feisty Hoffmann’s two-fingered Sloth, joined the Urban Sloth Project in May 2021. Nacho was one of the most interesting sloths we monitored during the months he was part of the project.