Here are 50 more mind-blowing facts from the animal kingdom:

1. A cat has a total of 32 muscles in each ear, which allows them to move their ears in any direction.
2. Sloths only defecate once a week, and they climb down from trees to do so.
3. A group of flamingos is called a flamboyance.
4. Octopuses have three hearts.
5. Kangaroos can’t walk backwards.
6. A group of ferrets is called a business.
7. A rhinoceros’ horn is made of compacted hair.
8. A jellyfish is not a fish, but a type of plankton.
9. The blue whale has the largest heart of any animal.
10. A cheetah can run up to 70 mph (113 km/h) for short distances.
11. Pigs can get sunburned.
12. The horned lizard can squirt blood from its eyes to scare off predators.
13. A giraffe’s neck has the same number of vertebrae as a human’s neck.
14. A lobster’s blood is colorless until exposed to oxygen, at which point it turns blue.
15. A group of owls is called a parliament.
16. Camels can close their nostrils to keep out sand and dust.
17. Seahorses mate for life and hold each other’s tails when they travel.
18. The common garden snail has 14,000 teeth.
19. A group of gorillas is called a band.
20. The fangtooth fish has the largest teeth of any fish in the ocean in relation to its body size.
21. A dolphin can hold its breath for up to 15 minutes.
22. Polar bears’ fur is not white, but actually transparent and hollow.
23. The humpback whale’s song can last up to 20 minutes and be heard over 20 miles away.
24. A group of crows is called a murder.
25. A newborn kangaroo is about 1 inch (2.5 cm) long.
26. The pistol shrimp’s claw can create a sonic boom that stuns its prey.
27. An ostrich’s eye is bigger than its brain.
28. A group of jellyfish is called a smack.
29. The tongue of a blue whale can weigh as much as an elephant.
30. A group of ants is called a colony.
31. The largest known jellyfish has a bell that measures 7.6 feet (2.3 meters) across.
32. A group of lions is called a pride.
33. Hummingbirds can flap their wings up to 80 times per second.
34. A group of crocodiles is called a bask.
35. A woodpecker’s tongue can wrap around its brain to protect it from injury.
36. A group of hyenas is called a cackle.
37. A shark can detect a drop of blood in 25 gallons (100 liters) of water.
38. A group of skunks is called a surfeit.
39. A penguin can dive up to 500 feet (150 meters) deep.
40. A group of ravens is called an unkindness.
41. The male seahorse carries and gives birth to the young.
42. A group of hedgehogs is called a prickle.
43. A praying mantis can turn its head 180 degrees.
44. A group of otters is called a romp.
45. The blue-ringed octopus is one of the most venomous animals in the world.
46. A group of toucans is called a flock.
47. A woodchuck can chuck approximately 700 pounds (A woodchuck can chuck approximately 700 pounds (318 kg) of dirt in a single day.
48. A group of zebras is called a zeal.
49. A male lion’s roar can be heard up to five miles (eight kilometers) away.
50. A tardigrade, also known as a water bear, can survive extreme conditions such as being frozen, boiled, or exposed to radiation, and can live for over 60 years.