The mother is feeding her baby a piece of banana.

Have you ever seen a penguin’s open beak? Their entire mouth (including their tongue) is filled with spiky, teeth-like structures. The bird needs them to be able to catch food and they act as a sort of hook. Once a slippery fish gets onto a penguin’s tongue, those structures (called papillae) pierce the prey so it won’t have a chance to escape.

This predatory fish lives on the east coast of the Atlantic Ocean and in 3 seas: the Mediterranean, the Aegean Sea, and the Black Sea. The weever lives in both shallow waters and in deep waters. It likes to dig into the sand, which sometimes results in people stepping on it. Unfortunately, these meetings often end up as traumas or can have even worse consequences.

The fish has poisonous spines on its fins and gill wings. A sting with this kind of spike can even lead to death. However, usually, there is not a big risk for humans — the sting will be really painful, but it should get no worse than that.

This bird has 2 big secrets. First of all, storks don’t just eat fish and frogs, but their diet also includes other birds, their eggs, small rodents, and snakes (including venomous ones). Their huge and strong beaks help these birds catch prey.

Second, storks adopt other birds’ chicks and throw their own babies out of their nests. It’s thought that they get rid of their own chicks in 2 instances: if the chicks are weak or if the parents don’t have enough food. However, scientists have noticed situations where neither of these 2 factors was present — in these cases, it’s explained as strange behavior on the part of the birds.

A squirrel’s standard diet is nuts, seeds, berries, and mushrooms. However, this animal doesn’t mind treating itself to meat, especially in winter periods when there is not enough food. Small rodents, birds, and reptiles become their prey. Thanks to squirrels’ sharp teeth and powerful jaws, victims have practically no chance to win a battle with them.

Squirrels are not dangerous for humans. All they can do is chew through electrical wires and undermine the foundation of a house.

Its crest makes this bird one of the most recognizable ones. Its population is also quite widespread. Waxwings live in the forests of Eurasia and North America. It moves to cities in order to be able to get food in the winter. Rowanberries are the bird’s favorite food. In addition, it often eats fermented berries.

Since waxwings have small bodies, these berries have a harmful effect on the bird. They literally get drunk. By the way, this also happens to other feathery creatures who like to treat themselves to rowanberries.

These birds do many things while they are in their drunken state: they get into snowdrifts, and crash into people and windows, as well as into the walls of houses. From the outside, this may seem funny, but in fact, it often leads to fatal consequences.

The polar bear is the only creature on the planet that hunts for humans at will. All other animals prefer to hide and attack for self-defense purposes only. Perhaps this is due to the fact that, territorially, people and polar bears don’t intersect. The animals simply don’t realize that they need to be afraid of humans — this thought doesn’t exist in their genetic memory.

Moreover, these bears are dangerous not only on the ground, but also in the water. They are good swimmers and can reach a speed of around 6.2 mph. Comparatively speaking, we are slow. Some of the fastest human swimmers clock in around 5.3 mph, while their average speed is 2 mph.

This animal’s appearance resembles a rat with long thin legs and it is included on the list of venomous mammals. The venom (which is in its saliva) gets into the victim’s body through grooves on the second lower incisors, just like a snake bite. As paradoxical as it might sound, solenodons don’t have immunity to their own venom — oftentimes, when a solenodon gets bitten in a fight, it dies.

This animal hasn’t undergone any changes over the past 76 million years, which is why it’s often called a living fossil.

It’s minimally dangerous for humans — only a few bites have been recorded in history and none of them have ended up as a tragedy. The pain and edema that do happen after a bite will disappear after a few days.

It looks like an ordinary dog. Until you get closer

The fence that protects farmlands from dingoes

As a rule, dingoes behave very carefully with humans and run away if they have the opportunity. Nevertheless, they sometimes attack humans too. In most cases, this happens because of the human’s behavior — when seeing a dog, they start to communicate with dingoes the same way they communicate with a dog (they try to feed them, pet them, and play with them), forgetting about the fact dingoes are closer to wolves than they are to domestic dogs.

The symbol of pure love, perfection, and grace is actually quite brawny and strong. This bird usually weighs in at about 28 lbs, with a wingspan up to 8 ft.

Swans can be dangerous to humans if they get close to their nest. When attacking, these birds hiss, run at their potential enemy, and beat them with their wings.

In the best case, the foe will get a slight shock, in the worst case, they will get a couple of serious bruises. There have also been cases where swans turned over small boats with people in them.

This pet-sized animal is considered to be the largest marsupial predator in the world. It lives on the island of Tasmania and is now threatened with extinction.

They are quite slow and clumsy when relaxed, but can run fast when necessary. They can also swim and climb trees very well.

This bird’s skin and feathers contain batrachotoxin — a super-strong neurotoxin. After physical contact with the pitohui, small animals usually die of paralysis and convulsions.

The toxicity of these birds comes from what they eat: bugs whose bodies are literally saturated with the aforementioned toxin. The bird eventually developed an immunity to it, but humans have not.

Nevertheless, an accidental meeting between the pitohui and humans is unlikely to end in tragedy. However, it’s not the best idea to touch the pitohui, because your fingers will get numb almost instantly and you’ll experience a prickly, pins and needles feeling. It’s likely that you will reflexively touch your face or your mouth, which will also go numb. After that, you’ll need medical help. However, so far no antidote exists.

These snails are not dangerous by themselves, however, their bodies often become homes for parasites that can cause schistosomiasis.

It’s the second most widespread tropical disease in the world. In 2018, for example, 229 million people were affected by it. You can get it when swimming in freshwater.

Shrews can be seen in almost every corner of the world: from the tundra plains to the desert. Some types of shrews are poisonous, like the Northern short-tailed shrew (which lives in North America) and the bicolored shrew, also known as the bicolored white-toothed shrew (which lives in Europe).

The saliva of another type of poisonous shrew, the Eurasian water shrew, contains a paralyzing substance, making it one of the few venomous mammals.

Shrews are not dangerous for humans, though their bites can be painful and will create some pain or swelling that will disappear after a few days.