Penguins Have Kneecaps, Starfish Can Be Square-Shaped: 13 Animal Facts Your Teacher Might Not Know
In today's era of technological advancement, people's living standards have improved significantly, and educational attainment has also increased significantly. The popularization of knowledge in the classroom is becoming increasingly widespread, which is simply unbelievable compared to a few years ago or even decades ago. However, today, the author would like to share 13 fascinating facts about animals, and you may be surprised to learn that even your biology teacher might not know them! For example, penguins have kneecaps, and starfish can be square-shaped. Do you know these amazing animal facts?
1. This is the foot of the duck-billed platypus.
Because of their habits, the duck-billed platypus’s feet have evolved into a webbed shape, suitable for swimming.
2. Penguins also have kneecaps.
When we talk about penguins, we immediately think of penguins' wobbly steps and short stature, but don’t underestimate the penguin! Although it looks short-legged, the penguin does have kneecaps, and its bone structure in the legs is similar to that of human bones. We can’t see the penguin’s legs and kneecaps at a glance, but when we see it in an X-ray, we can clearly see the penguin’s kneecaps.
3. Some owl babies like to sleep like this.
When I was a child, I saw a cartoon version of an owl on the textbook and felt very peculiar. My teacher said that owl babies like to sleep standing up. Who would have thought that some owl babies actually like to sleep standing up?
4. Beaver's teeth are orange.
If you look at the photos, you may not think that the orange color on the beaver's face is its teeth. But if I tell you that it's its teeth, I wonder what you think? Beaver’s teeth are orange, because the teeth contain iron, as they like to gnaw on trees. So, the beaver is a true ‘iron-toothed copper-toothed rodent’.
5. The Hog-badger ‘makes up’.
The Hog-badger is considered the most ‘make-up’ bird in the world. Why? Because the ‘muddy red’ feathers you see on it are feathers it dyed itself, and it’s rare for birds to use external materials to change their appearance.
6. Young elephants suckle their noses.
We all know that many young children have the habit of sucking their fingers, but did you know that this also exists in the animal kingdom? Young elephants suckle their noses like children. Do you think your biology teacher has never told you this?
7. The feet of elephants are almost the same as those of humans.
Through X-ray observation, we can see that the bone structure of the elephant’s feet is almost identical to that of human feet.
8. The head of the whale is so big.
Whales are known for their huge size. But the head of a whale can be so large that it's bigger than the height of an average adult.
9. The tail of the elephant is like this.
Many people know that elephants are large and many people sit on elephants when traveling. But have you ever observed an elephant’s tail? Its tail is not covered with fur like cattle and sheep. The elephant’s tail is called ‘fly and mosquito hitter’, which is more suitable for driving away insects such as flies and mosquitoes.
10. Due to genetic abnormalities, some starfish can be square-shaped.
Many people have been to the seafood market or the seaside. Many people like to collect starfish. But in reality, most starfish are five-pointed, so many people think that starfish only have five-pointed shapes. But some starfish are square-shaped because of genetic mutations.
11. Shark eggs are transparent.
There are many kinds of shark eggs, some are spiral-shaped, and some are transparent, as shown in the picture. Do you know?
12. The Chinese water deer is like a vampire.
Deer are generally known for being docile and cute, such as the white deer. But there is also a type of deer called water deer. They have two large fangs, which are long and sharp, just like those seen in film and television dramas.
13. The Indian Giant Squirrel is colorful and can be as long as 3 feet.
The Indian Giant Squirrel is colorful, and its fur is extremely vibrant. The body size is also larger than the squirrel we know. Their length from head to tail is about 0.9 meters. However, because of its beautiful fur, it is now close to extinction.
