1. Sloth

Spending nearly 15 to 20 hours a day asleep, these animals have such a slow metabolism that it can take them an entire month to digest a single meal.

2. Koala

Due to the low nutritional value and high fibre of their eucalyptus diet, koalas must sleep for up to 22 hours a day just to conserve energy.

3. Giant Panda

These bears spend roughly half their day sleeping and the other half eating bamboo, rarely moving unless it is absolutely necessary to find their next snack.

4. Hippopotamus

To escape the intense heat, hippos spend up to 16 hours a day submerged in water or mud, often napping in heaps alongside their social group.

5. Opossum

While they are clever survivors, opossums are prolific sleepers that can spend up to 19 hours a day tucked away in the safety of their dens.

6. Python

These massive snakes are the ultimate sedentary predators, often remaining motionless for weeks at a time while they slowly digest a large meal.

7. Lion

Known as the "kings of the jungle," lions actually spend about 20 hours a day resting or sleeping to save their strength for short, explosive bursts of hunting.

8. Owl Monkey

As the only truly nocturnal monkey, they spend roughly 17 hours a day hiding in hollow trees to avoid the sun and predators.