How Fast Is Three-toed Sloth?

The slowest mammal on Earth ambles along at just 0.54 km/h on the ground. This is not laziness — it's metabolic efficiency. Their ultra-slow metabolism lets them survive on leaves so nutrient-poor that no other mammal bothers eating them.

Sloths move so slowly that algae literally grows in their fur, providing camouflage.

• 2× faster than a tortoise walks
• 9× slower than a walking human