Living in the wild is just as scary as it sounds. That’s why, even though the chances you will have to do it are slim, you’d better learn what kind of foods you should stay away from and not consume nor touch. Nature can be terrifying, as there are hundreds, if not thousands, of plants and fruits that could cause great harm or even kill you.

We would all like to think that we could be just as efficient as Bear Grylls at surviving in extreme conditions, but the truth is, he is a trained army guy, and that most of us have trouble ordering food online. And that is exactly why you should read this article so that you can educate yourself, and if the situation ever arises, to call yourself a survivor.

It’s not a selfish thing to want to learn what not to eat while you’re running for your life. This way, you can too teach your family and friends how to survive. The tricky part is that everything looks so appealing and inviting, and, when you’re starving, it’s hard to say no even if it’s poisonous. So, without further ado, here are the ultimate things that if ingested, could lead to some serious problems. Like death.

The first inedible thing is a difficult one. That’s because mushrooms – numero uno on our list – are divided into two categories: poisonous and non-poisonous. The ones you can eat are delicious and easy to cook even in a doomsday scenario. However, the other group, well, let’s just say some of the most potent poisons in the world can be contained by some species of mushrooms.

You should learn how to differentiate mushrooms, because they can be found in abundance in nature, and are an excellent source of protein. And yes, some are hallucinogenic, but it might not be a good idea to try those while wild animals surround you. To read about mushrooms, try your local library or Youtube.

At number two we have water. Yes, water! If you are thirsty, try to drink running water, not from stagnant pools. Stagnant water is filled with bacteria and algae most of the time, which can cause dysentery and other severe gastrointestinal diseases. And, ironically, it can lead to dehydration.

A smart thing you could do is prepare ahead. Invest in a quality and complete disaster kit, as those have decent water reserves. Or, if you want to take things even further, you can buy a water filter or a bottle that has one built-in. And whatever you do, do not drink ocean water. It can lead to death, and it is full of salt, which is only going to make you thirstier. If you don’t have any of these, try boiling the water you drink beforehand.

This might sound ridiculous to some, but next on this list is Poison Ivy. And why would some mistake it for an edible thing? Well, because most city people have never seen this plant in their entire lives, and because it closely resembles another edible leaf called the Virginia creeper.

The plant, aka. Miss Ivy, produces urushiol, which is a skin irritant. When it gets in contact with your epidermis, it will give you a rash, and painful blisters will appear almost instantly. As if this wasn’t enough, it can also lead to severe allergies. Even if you might never find yourself in a life and death situation, it is still a clever idea to look it up and to avoid it whenever you go to the park or camping.

Next up is the Horsenettle. What’s that, you’re asking? It is a plant which has fruits that look identical to cherry tomatoes, which are delicious and full of nutrients, unlike the weed mentioned above. If you’re hiking and you’re suddenly starving, whatever you do, do not eat those “tomatoes” that grow on the side of the trail. It might be a better idea to eat tree bark as our ancestors did.

And lastly, as our final public enemy, we have bats. You might think that this is insane and that nobody does that, but there are many countries where bats are a common meat source. However, they are known for carrying hundreds of diseases, including Ebola. Smoking, as bat meat is usually preserved by, doesn’t kill the virus and you could still get infected.