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11 Animal Facts That Not Even Biology Teachers Know About

Even though biology books describe some animals in quite a bit of detail, they often don’t reveal the most interesting facts. For example, did you know that dogs can be more dangerous than crocodiles and that roosters could go deaf from their cock-a-doodle-dooing? How about cats who know their names well and who simply ignore us by not reacting to them? You can read about all these and many other interesting things in our article.

5-Minute Crafts collected several facts that will show the lives of animals you know well from a different side.

Elephants can learn a lot about a person by their voice.

Based on sound, visual, and olfactory signals, elephants are able to determine the ethnicity, gender, and age of a person.

Dogs are more dangerous than crocodiles.

Though dogs are man’s best friend, they also become the reason for 25,000-35,000 human deaths around the world every year. And it is not about their aggression, but about the fact that many of them are able to transmit the rabies virus, an infection that often ends tragically, through their bites.

Crocodiles take about 1,000 human lives per year. And although researchers believe that this number may be slightly higher, crocodiles are still far from dogs in terms of danger.

By the way, the most dangerous creatures in the world are mosquitoes. From 750,000 to 1 million people suffer from their bites annually.

Axolotls are able to grow almost any part of the body, including partially restoring their heart and brain.

These amphibians can not only regrow almost any part of their body, including parts of their heart and brain. They can also exist with body parts and organs transplanted from other axolotls without any issues. In 1968, researchers proved that an axolotl could survive with another axolotl’s head and still be able to live a normal life.

Flamingo’s feathers are actually not pink.

Flamingos are not born pink. The feathers of young birds remain gray-white until they begin to feed on brine shrimp and blue-green algae that contains a natural dye. The substances contained in crustaceans and algae are poisonous to many other animals. However, thanks to their special metabolism, flamingos are able to process toxins and release pigments, which ultimately affect the color of the bird’s body.

By the way, not only do flamingos’ feathers become pink-orange, but also their skin, mucous membranes, and even the fat layer in their body.

Roosters could go deaf from their crowing.

The sound of a rooster’s crowing can be compared to the sound of a running chainsaw by its strength. If the auditory apparatus of a rooster were arranged in the same way as the auditory apparatus of a human, the bird would gradually become deaf from its own crowing.

So why don’t roosters become deaf? Scientists have found that half of their eardrum is covered with a piece of soft tissue that dampens incoming noise. When a rooster tilts its head back to crow, another piece of tissue completely covers their ear canal and acts as an earplug.

The tongue of a blue whale weighs approximately as much as an elephant.

The tongue of a blue whale weighs about 2.7 tonnes, that is, about the size of an average elephant. A whale’s heart weighs as much as a small car.

Koalas’ fingerprints are almost identical to human fingerprints.

It’s not just humans who have fingerprints, but also some monkeys like gorillas and chimpanzees. However, the fingerprints of primates are different from those of humans, which doesn’t apply to the fingerprints of koalas. Even with careful analysis under a microscope, scientists are not able to quickly distinguish the ’curls’ on the pads of human fingers from the same patterns those on koalas’ fingers.

The narwhal’s tusk is actually not a horn, but a tooth.

Spiral tusks, which are actually elongated fangs, are a significant feature of narwhals. These teeth, which are hollow inside, protrude through the lip of the animal and grow throughout their life, reaching a length of 4.9 to 10.2 ft and weighing about 22 lbs. About 1 in 500 males also grows a second tusk. Occasionally, these growths are also found in females.

It’s thanks to the beauty of their teeth that narwhal males manage to get the attention of narwhal females.

A hippo’s bite is stronger than the bite of a jaguar or a shark.

The jaguar holds the record when it comes to the strength of the bite among felines. Its teeth are so strong that they can easily bite through the shells of turtles. However, hippo fangs are even more powerful. They grow in the mouth of the animal for their whole life and can reach a length of more than 27 inches.

Cats can distinguish their names among other words.

Scientists claim that your cat can always recognize its name even if it is ignoring you and doesn’t respond. Why do cats behave so strangely? Well, they simply don’t think they are obliged to respond to you.

Turtles don’t live in a shell, they are a shell.

A turtle’s/tortoise’s shell is not its home but a formation that appeared thanks to the growth of its rib bones. Over the course of evolution, the shell grew together with the ribs and spine of the animal, so the turtle isn’t able to leave its house no matter how much it wants to.

Preview photo credit 53084 / Pixabay
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