What Do Spiders Eat?

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Spiders are fascinating creatures with a unique diet. It is only understandable to be intrigued about what do spiders eat?

They eat all sorts of different things, including insects, other spiders, and even small animals. In this article, you will learn more about the different types of food that spiders eat, as well as what they do not eat.

What do spiders eat?

Spiders are predators, including the house spiders, and they feed on a variety of prey, including insects, other spiders, and even small vertebrates.

They have a very diverse diet that ranges from tiny prey to larger items. Some spider species have been known to eat their own kind, but this is not common.

What do spiders eat?

In general, spiders will only eat live prey or prey that they have recently killed. This means that spiders typically will not scavenge for food. However, there are some exceptions to this rule, as certain species of spiders can survive by feeding on detritus.

Spiders are generally carnivores.

Araneus diadematus garden spider with prey in web

Spiders are carnivores and predators, which means that they eat mostly meat. They usually prey on insects, but some spiders will also eat other small animals or even other spiders.

However, there are one species of spider that feeds mostly on plants and plant products- Baheera Kipling.

How do spiders eat?

Spiders eat their prey by injecting it with poison that liquefies the insides of the prey item. Then they suck up the liquid food. They don’t have a set of teeth to chew their food, but they have two fangs (chelicerae) to cut or crush food into smaller bite-size pieces.

Spider Anatomy

Spiders are predators, and their diet consists of a variety of different prey items. Some spiders, such as tarantula spiders, inject digestive juices into their prey to liquefy it before eating. This makes the process easier and faster for the spider.

Digestive System of Spider

Spiders secrete digestive enzymes on their prey to soften it down. This allows them to ingest and digest their food easily. They then use their sucking mouthparts to suck the liquefied prey into their stomachs.

They catch their prey by spinning webs, which act as traps. Once the prey is caught, spiders inject the enzymes inside the body of their prey and then suck it all up with their straw-like mouth.

Spiders have a unique digestive system that allows them to digest their prey outside of their body. They use enzymes to break down the prey and then suck up the liquid.

Sometimes they will secrete these enzymes onto chopped-up body parts of their prey to soften it all up before eating.

Do spiders eat cockroaches?

Spiders are predators, and as such, they eat a variety of insects. Cockroaches are insects that spiders hunt and eat. In fact, it is one of their favorite foods.

A Huntsman spider is not your typical spider. They do not build the spider web to catch their prey. Rather, they actively hunt for their food.

Once they have captured their prey, they inject it with venom from their fangs, immobilizing it before taking it back to their hideout to eat.

Do spiders eat ants?

Spiders are known as generalist predators, which means they prey on different types of insects or small animals in general. This includes ants, which are common prey for spiders.

While there are many different types of spiders, a select few prey specifically on ants. These spiders can be found all over the world, and they often build their webs near anthills or other places inside your home where ants are present.

Interestingly, there are spiders that prey specifically on ants. These spiders have adapted to look for ants that can be easily successful in catching. However, other spiders will also eat ants if they get the chance.

In addition, ants are not the only prey that these spiders go for. They will eat a variety of insects, including other spiders. However, ants can be difficult prey because they are also aggressive and have a strong defense mechanism.

Do spiders eat wasps?

spider eating a dragonfly,

Yes, spiders eat wasps. In fact, the Yellow Garden Spider or Black Garden Spider (Argiope aurantia) prey specifically on wasps. They are known to wait near nests until a wasp comes out and then quickly snatch it up.

The black and yellow markings on a spider’s back are called aposematic coloration. This means that the spider is poisonous or distasteful to predators. Aposematic coloring is used as a warning signal to potential predators.

These spiders make characteristic zigzag patterns across their webs because they hunt by sensing the vibrations of prey in the web. Insects that get caught on the web, such as wasps, are usually killed and eaten.

Do spiders eat other spiders?

Hunting spider carrying a huge fly in a vertical walk on a window, reflections from the animals in the window

There is a spider known as the Portia, which is known to eat other spiders. It has a body that looks like it’s covered with a lot of tiny plant debris, which allows it to camouflage itself and sneak up on its prey undetected.

Spider predators, such as Portia, play an important role in the food web by predating on other invertebrates and small vertebrates.

These spiders are generalist predators that feed on a variety of prey items. This helps keep populations of their prey in check and ensures a balance in the ecosystem.

Do spiders eat slugs?

Spiders and slugs are both invertebrates, which means they lack a backbone. They are cousins and share some common characteristics. One of these is that they are both predators and eat other small animals.

Daddy-long-legs are not spiders, but they are cousins of the tarantula. These long-legged creatures prey on small insects and other invertebrates like slugs.

Interestingly, the daddy-long-legs spider is the cousin of the tarantula, and it preys on slugs.

Do spiders eat woodlice?

Spectacular spider reaches out for an insect it has caught in its web.

Woodlice are not a favorite food of spiders, although some species will eat them. Spiders generally prefer insects as prey, but they have been known to eat other small animals, such as woodlice.

Interestingly, there is at least one spider that preys upon woodlice- the Dysdera crocata or woodlouse spider. This spider is found throughout Europe and North America and can be identified by its reddish abdomen.

Do spiders eat bees?

Crab spiders are species of spider that don’t build webs to catch prey. Instead, they rely on their quick reflexes and stealth to ambush their prey. They are known to eat bees, but they also eat other insects, such as flies and mosquitoes.

Spiders are predators and eat a variety of prey items. Crab spiders, for example, are ambush predators that wait for their prey to come close before attacking. This means they will sit and wait until a bee comes close enough before pouncing on it.

Do spiders eat moths?

Many people are curious about what spiders eat. The answer to this question is that they eat a variety of things, including insects, other arachnids, and even small vertebrates.

While different types of spiders have different diets, most of them prey on insects. This includes moths, which make up a significant portion of many spiders’ diets.

Phidippus, a jumping spider genus, is skilled in hunting down its prey. It may come as a piece of shocking news, but these spiders can leap distances up to ten times their own body length to catch a moth and other flying insects.

Spiders are known to have excellent big eyes and great eyesight and can easily distinguish their prey from a distance. This helps them hunt down their prey with precision.

What do spiders eat other than bugs?

While spiders are typically known to eat insects, they actually consume a variety of different things. This includes other bugs, as well as small lizards, frogs, and birds. They have also been known to consume fruits and vegetables.

Interestingly, spiders that feed on plant material get the majority of their nutrients from the leaves of the Acacia tree. The sap-sucking bugs that live on this tree provide an excellent food source for these spiders, as they are packed with proteins, lipids, and carbohydrates.

In fact, there are a number of spiders that feed on different types of prey. For example, a water spider that feeds on fish is a primary example. Additionally, some spiders will eat other insects, such as beetles and ants, while others will consume small mammals or lizards.


Spiders may coexist with people in their natural habitat and as pets. Spiders will eat insects and bugs in both habitats, and depending on their size and species, they may also eat other spiders. Although the majority of these items contain moisture, spiders still require water to complete their diet.

About the author

A biotechnologist by profession and a passionate pest researcher. I have been one of those people who used to run away from cockroaches and rats due to their pesky features, but then we all get that turn in life when we have to face something.