Why Are Sloths Slow? — Reading Comprehension

Sloths are famous for their incredibly slow pace, moving with such deliberate speed that they often appear to be in slow motion. But why are sloths slow? This isn't just a quirky habit; it's a brilliant energy-saving strategy that allows them to thrive on a surprisingly low-nutrient diet in the dense tropical rainforests of Central and South America.

The primary reason for a sloth's sluggishness is its exceptionally low metabolic rate. Their metabolism is about half as fast as that of most other mammals their size. This is a direct adaptation to their diet, which consists mainly of leaves. Leaves are very fibrous, difficult to digest, and provide very little energy. By moving slowly and conserving every bit of energy, sloths can survive on a diet that wouldn't sustain faster-moving animals.

A sloth's slow metabolism also affects its body temperature. Unlike many mammals that maintain a constant high body temperature, a sloth's body temperature can fluctuate slightly, further reducing the energy needed for internal heating. Their leisurely movements, whether climbing, eating, or even scratching, minimize energy expenditure. They spend up to 15 hours a day sleeping or resting, another way to save energy.

Beyond saving energy, being slow offers another surprising survival advantage: camouflage. Their unhurried movements and the algae that often grow on their fur (giving them a greenish tint) make them incredibly difficult for predators like jaguars and harpy eagles to spot in the leafy canopy. For sloths, slowness isn't a disadvantage; it's a perfectly adapted way of life that balances their diet, energy needs, and safety in their jungle home.

What is the main reason sloths are slow?

What is a sloth's primary food source?

Are leaves high or low in nutrients for sloths?

How does their slow metabolism help sloths?

What covers a sloth's fur, aiding camouflage?

What do sloths do for up to 15 hours a day?

What is the main idea of this passage?

Who are some of a sloth's predators?