If you could see a sloth up in the trees of South America, you might think it was moving in slow motion. That slowness is actually the key to the sloth's success.
Sloths are tree-dwelling mammals with tiny heads and long arms.
They live in the tropics of South America. If you could see one, you might be amazed by the deliberate way a sloth moves its limbs, almost as if it's moving in slow motion. These hunters usually detect their prey when it moves against its background. So they're less visible to predators. What's more, sloths have a unique form of camouflage.