Did you know that sloths get about 10 hours of sleep each day? Although it might sound like a lot to us humans, it's not the most amount of sleep in the animal kingdom. What's different about the sloth's sleep habits is HOW they sleep. That is, hanging upside down.
In fact, sloths spend the majority of their time hanging from trees, eating and even giving birth upside down, so sleeping upside is just part of the routine. Some sloths even remain hanging from limbs after they've died!