Insects Planet

Are Stick Insects Poisonous? (Detailed Guide)

The stick insect “Phasmatodea” is one of the most bizarre and interesting creatures on the planet. With their long, spindly legs and strange, angular bodies, they seem to be more alien than an insect.

However, despite their otherworldly appearance, are they actually poisonous?

When most people think of poisonous insects, they probably think of things like spiders or scorpions. But what about stick insects? Are these long, spindly creatures harmful to humans?

Well, in this article we will answer that very question and also answer so other related questions you may have about these fascinating insects.

Are Stick Insects Poisonous To Handle?

No! Stick insects are not poisonous to handle. These gentle creatures are actually harmless to humans and there is no need to worry about them if you come into contact with one.

In fact, stick insects are handled quite frequently by pet owners from all over the world. Even scientists and entomologists often handle stick insects in order to study them more closely.

So, if you’ve ever been curious about these creatures but were afraid of being poisoned, don’t worry! You can rest assured knowing that stick insects are not poisonous to handle.

Is A Stick Insects Bite Poisonous?

Now that we know that stick insects are not poisonous to handle, you might be wondering if a stick insect’s bite is poisonous. The short answer is no!

Stick insects do not bite humans and are harmless creatures that pose no threat to humans whatsoever. In fact, they are actually quite beneficial, helping to control populations of harmful pests like Aphids.

So if you ever come across a stick insect, and you want to handle it there is no need to worry about being bitten – they are simply not capable of doing so.

Related Article:

Are Stick Insects Poisonous To Pets?

While stick insects are not harmful to humans, you might be wondering if they are poisonous to pets. The good news is that stick insects are not poisonous to our pets this includes both dogs and cats.

With that said, while stick insects are not poisonous to pets, they can pose a choking hazard. Stick insects have long, slender bodies that can easily be mistaken for twigs or leaves.

As a result, curious cats or dogs may try to chew on them, which can lead to choking. In addition, stick insects may also release a foul-smelling liquid when threatened, which can irritate your pet’s nose or mouth.

Are They Poisonous To Other Insects?

With over three thousand species, stick insects are some of the most popular insects among collectors and hobbyists. But despite their gentle nature, many people still wonder: are stick insects poisonous to other insects?

The answer is no, stick insects are not poisonous to other insects. However, it is important to note that some species of stick insects can release a foul-smelling liquid when they feel threatened.

This liquid can irritate the eyes and skin of other insects, and may even kill smaller creatures.

So, How Do Stick Insects Defend Themselves?

Stick insects have long relied on this defense mechanism to keep themselves safe from being eaten by small animals. Some stick insect species have spikes and thorns all over their body, making them difficult for predators to take a bite out of.

Others can even pinch with spikes located on their hind legs, sometimes allowing them to fight off a predator altogether. Of course, not all stick insects are equally equipped in the Spike and Thorn Department.

In fact, scientists have recently discovered a new smelly species of stick insect living in the Philippines called “conlephasma” that release a foul-smelling spray to deters predators.

However, most predators rely on their sense of smell to locate food. As a result, stick insects are able to camouflage themselves most of the time and hide from predators.

Stick Insects Defense Mechanism:

  • Uses Spikes Located On Their Hind Legs
  • They Release A Foul-Smelling Liquid
  • Camouflage Themselves To Their Surroundings

While the toxicity of stick insects varies from species to species, all stick insects have the ability to defend themselves with this substance.

Do They Carry Diseases?

There is much disagreement among experts about whether or not stick insects carry diseases. Some scientists believe that these insects are potential carriers of bacteria and viruses, while others contend that they pose no threat to human health.

The debate largely revolves around the fact that stick insects are often found in close proximity to humans, and they may come into contact with our food and water supplies.

If these insects are infected with a disease, they could potentially transmit it to people. However, there is no definitive evidence that this has ever occurred.

Until more research is conducted, the jury will remain out on whether or not stick insects pose a health risk to humans.

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Are There Any Other Insects That Are Poisonous?

Now that we know that stick insects are not poisonous, you might be wondering if there are any insects that are poisonous to them. The answer is yes, there are a few species of insect that can be harmful.


Many people are familiar with fireflies, also known as lightning bugs, which are found in many parts of the world. These small insects are actually a type of beetle, and they are capable of producing a type of poison that is similar to the toxins found in toads.

While the poison produced by fireflies is not deadly to humans, it can cause a significant amount of discomfort if ingested. In addition, fireflies are sometimes eaten by other animals, which can be killed by poison.


Though they may look slow and harmless, millipedes can actually be quite dangerous. These insects are closely related to centipedes, and like their cousins, they produce toxic substances that can cause chemical burns.

In fact, some millipedes even produce cyanide, one of the most deadly poisons known to man. Though millipedes are not aggressive and will only attack if provoked, their toxins can cause serious damage to the skin.


Many people are surprised to learn that caterpillars can be poisonous. After all, these fuzzy little insects are often considered to be harmless garden pests.

However, some caterpillars are actually quite poisonous and can pose a serious health risk to humans and animals. The Monarch butterfly is one of the most well-known poisonous caterpillars.

These brightly colored insects feed on milkweed plants, which contain a toxic substance known as cardiac glycosides.

Blister Beetles

Blister beetles are one of the most notorious groups of insects due to their production of cantharidin, a toxic chemical that can cause blisters on the skin.

Cantharidin is a colorless liquid that is secreted from joints in the beetle’s exoskeleton. If the beetle is pinched or crushed, the cantharidin is expelled and can raise blisters on human skin.


The takeaway from this study is that stick insects are not poisonous and can be safely handled by humans. When it comes to these creatures, there is no need to be afraid- just appreciative of their unique beauty!

So if your thinking of getting one as a pet, don’t worry about them being poisonous.

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