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Their blood temperature fluctuates with the ambient temperature, a rare trait among mammals that they share with the sloth.

A sloth has had pioneering dental surgery to cure toothache.

And so much more illness is on the rise, from Victorian-era diseases like tuberculosis to novel tropical diseases like “sloth fever.”

Non-human primates, including howler monkeys and sloths, can also be infected with Oropouche, which is why the disease is sometimes nicknamed “sloth fever.”

Gluttony, greed, sloth, lust and even murder have been on display in its cryptic halls.