Beware: Dangerous Pests in the World

Pest control isn’t only widespread in the Philippines. In fact, the attempt to extinguish these deadly insects is also rampant in other parts of the world, where a myriad of other pests exist to plague humans.

Depending on where you live, you might stumble upon irksome pests that disrupt your daily routine… or pests that can be lethal.

But how exactly would you classify if a pest is deadly?

There are various factors to choose from, such as their bites, ability to transmit diseases, and rate of reproduction, among other things.

Read this article to discover some of the most dangerous pests in the world.


Places near the equator—such as Australia and South America—house the most venomous spiders in the world. Their bites could lead to grave ailments, or in other instances, death.

Some of these spiders are:

  • Redback spiders
  • Brown Recluse spider
  • Brazilian Wandering spider
  • Black Widow


Fleas are exterior parasites that prey on humans, birds, reptiles, and pets. They are tremendously tiny (only about the tip of a pen) and reproduce swiftly. In fact, a female flea is said to lay a whopping 2,000 eggs in its lifespan alone.

In humans, their bites are marked by spots and red bumps. Since these are extremely itchy, they can eventually lead to infection.


As with fleas, termites also reproduce very quickly. They gnaw on wood and cause severe damage to structures.

The main dilemma?

Termites are difficult to detect. Homeowners will only take notice of them when they already see the structures crumbling.

Kissing Bug

The term “kissing bug” stems from these pests’ penchant for nibbling on the lips of humans as they sleep.

As if that isn’t creepy enough, these bugs also transmit a parasite to their host.


Ants are, needless to say, pervasive. While some of them only cause minor disturbances, there are others that can be deadly.

Driver ants have the greatest number of colony members than any other insect. In fact, each colony is composed of around 22 million ants. They possess powerful mandibles.

Bullet ants are the most massive ants in the world. A bite from this ant is likened to the sensation of being shot (hence, its name).

Fire ants have extremely painful stings, which could lead to skin conditions, such as pustules. The toxin from their bites could also cause allergic reactions.

Giant Japanese Hornet

They’re the biggest species of hornet in the world, and can swell to at least 2 inches. They cause up to 40 deaths yearly.

These insects are highly aggressive and dauntless.

Tsetse Flies

Tsetse flies are considered the most lethal biting insect in Africa. They find nourishment in the blood of vertebrates. Their poison is alarmingly strong, and can lead to life-or-death situations when not treated.

Killer Bees

They’re one of the most hostile species of insects in the world. A colony will ruthlessly follow their victims for more than a mile. To make it worse, they primarily assault the face and eyes of humans.


How frightening that an insect so common also turns out to be responsible for millions of deaths annually. World Health Organization (WHO) declares that a child dies from malaria every 30 seconds.

Aside from transmitting malaria and dengue, mosquitoes are also a carrier of tons of other diseases. Some of them are:

  • Encephalitis
  • Ross River fever
  • Zika fever
  • Yellow fever
  • West Nile fever
  • Lymphatic filariasis

Key Takeaway

Pests should not be taken lightly. They have the capacity to seriously harm us—whether it’s through their bites or their ability to carry an array of diseases.

This is precisely why we should invest on exceptional pest control practices.


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