The 'demons' suck the blood of scary people

Demon bat. Of the 1,000 known bat species, only 3 are human bloods. While hairy bats and white wings only suck blood from animals, demon bats suck both human blood and animal blood.

Candiru. This catfish is the scariest human bloodbender in the animal world, but you will be safe if you do not go to the toilet in the Amazon and Orinoco rivers.

Female mosquito. The nature of mosquito bites does not pose a danger, but the diseases that it carries and spread when burning people are really a fantasy. For example, the malaria disease that is transmitted by mosquitoes causes more than 3 million deaths per year.

Ve. This species can absorb 600 times more blood in the body. They like to live in warm, forested areas, near water. It is also the agent of Lyme disease, a debilitating disease.

Sardines. This is an ancient fish. They have no jaws and scales. Sardines need 7 years to fully develop, but then, they are really a monster. It clings to the victim's body and absorbs blood when these species are swimming, unable to defend themselves.

Bug. This species has followed us thousands of years ago, from the time in the cave until now. They often hide in the dark and smoke blood when night falls.

Kissing bug. The reason is called kissing because this aphid species often sucks blood on human face. It is also the agent of Chagas disease in Africa, a disease affecting the heart and digestion.

Leech. They often live a lot in places where water is available. When sucking blood, leeches produce anticoagulants, and for this reason they are used to treat patients with blood clots.

Vermin. There are many species of fleas, with clear distinctions: dog fleas, cats, mice, people .

Head lice. It is also a parasite, but lice are even more 'difficult' than fleas when it targets only certain parts of certain prey.

Birds suck blood. This species has a unique blood sucking strategy: they only create small open wounds on larger birds so that the victim does not return to beat them or leave elsewhere.