Wildlife is so vast and diverse that we couldn’t learn everything about it in our lifetime. Sometimes, we encounter facts that go beyond our understanding. Could you ever imagine that gray kangaroos are left-handed or that polar bears are partly invisible?

We at Bright Side are convinced, once again, that nature has an endless number of surprises in store for us, which make us admire its power and ingenuity.

1. Horses have the best facial expressions.

According to a study published in the journal, Plos One, horses can express 17 facial expressions — more than have been identified in chimpanzees, orangutans, rhesus macaques, gibbons, and dogs.

2. The shape of animals’ pupils depends on their activities.

, , Herbivorous animals are likely to have stretched horizontal pupils, which gives them wide coverage of the horizon and the ability to notice creeping enemies. The vertically elongated pupils are more typical for small ambush predators since they help them focus better on prey. Large predators tend to have round pupils. They actively chase down prey, mostly during the day.

3. Watusi cows have the biggest horns in the world. The largest horn circumference on a bull measured at 40.75 in (103.5 cm).

6. An elephant’s skin is as thick as 1 in (2.5 cm) in most places. However, it’s so sensitive, that the elephants can feel a single insect land on their bodies.

7. Pink flamingos can form long-lasting friendships.

8. Ants wouldn’t suffer from any damage after falling from any height due to their size, weight, and body structure.

Ants have an exoskeleton, an external covering that protects their bodies.

9. Gray kangaroos are more often left-handed, bottlenose dolphins are right-handed, and polar bears, according to scientists, are ambidextrous — which means they can use both paws equally.

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10. Giraffes clean their noses by using their tongues.

The fur of the polar bear absorbs heat without giving it away. Only the nose, eyes, and air exhaled by the bear can be visible in the infrared spectrum.

13. In case of danger, the African jacana male carries his chicks to safety by hiding them in his feathers.

16. Lemurs can count.

17. The saltwater crocodile has been confirmed as having the strongest bite force ever with a value of 16 460 N.

The axial length of the eyeball of these birds is ≈39 mm, which is almost one and a half times longer than that of a human.

19. The lynx doesn’t sink into snow due to the structure of its paws.

© DepositphotosThe paws of the lynx are well-adapted for walking in deep snow. They’re large, webbed, and covered in fur on the underside, which creates a snowshoe effect.

20. The blue whale’s heartbeat can be heard from over 2 miles away.

Which of these facts surprised you the most? Do you know any other interesting facts about animals?