Why Do Cats Eat Spiders And Flies?

Cats are quirky creatures, and one of their most curious habits is eating spiders and flies. It may seem like an odd preference, but understanding why cats do this is crucial for their health. As feline behavior experts, we’ve dug deep to provide you with a comprehensive understanding of why cats choose to gobble up these creepy crawlies.

So, why do cats eat spiders and flies? One reason could be their innate hunting instincts. Cats are natural predators and view these bugs as easy prey items they can catch and consume. Plus, these insects are a rich source of protein – a vital nutrient for cats. However, before you start applauding your cat’s hunting skills, remember that some spiders are dangerous and their venom can harm your furry friend. So, while it’s okay for your cat to snack on flies occasionally, keep them away from spiders.

In this blog post, we’ll delve into the reasons behind this peculiar behavior – including motivations and potential health implications of cats eating insects. We’ll also share tips on preventing your cat from catching spiders and offer expert advice on what to do if they ingest a harmful spider. Get ready for a fascinating insight into the world of our beloved pets and their quirky eating habits.

Cats as Natural Hunters

Cats are fascinating creatures, and one of their most intriguing traits is their innate ability to hunt. This skill is deeply ingrained in their DNA and was once necessary for survival in the wild. Despite being domesticated pets, cats still possess the hunting instincts of their wild ancestors.

Cats have keen senses, including sharp eyesight, excellent hearing, and a strong sense of smell, which helps them locate their prey. They are particularly attracted to moving objects and can quickly pounce on small insects like spiders and flies. Some experts believe that cats may eat these insects because they provide a source of protein that is missing from their regular diet.

But why are cats so fascinated with small prey like spiders and flies? For one, these pesky insects are often found inside the home, making them an easy target for cats. Cats are enthralled by the quick and erratic movements of flies, which trigger their predatory instincts. They also find spiders intriguing due to their unique appearance and behavior.

In addition to being a source of nutrition, hunting small insects provides mental stimulation for cats. It allows them to practice their hunting skills without much effort and keeps them mentally engaged. Mental stimulation is crucial for a cat’s overall well-being and can prevent them from becoming bored or lethargic.

As pet owners, we should not discourage our cats from hunting small prey unless it poses a danger to their health. Instead, we should provide our feline friends with plenty of opportunities for mental stimulation and exercise to keep them happy and healthy. Interactive toys, puzzle feeders, and playtime with their human companions are great ways to satisfy a cat’s natural hunting instincts.

Fascination with Flies and Spiders

These small prey are easy targets found right in our homes. But why are cats so drawn to them, and is it safe for them to indulge in their hunting instincts?

Cats are natural hunters and have an innate curiosity that drives them to chase and capture small prey. Flies and spiders provide the perfect opportunity for cats to engage in their predatory behavior. The buzzing of a fly can be especially enticing to cats, while the quick movements of a spider can trigger their hunting instincts.

It’s not just the movement that fascinates cats. Flies are attracted to decaying matter, producing a strong odor that entices cats. Meanwhile, some cats may find the slightly sweet taste of spiders appealing. However, it’s crucial to note that feeding cats flies or spiders as part of their regular diet is not recommended.

Because flies and spiders can carry harmful bacteria and parasites that make cats sick. Consuming a large number of flies or spiders can also cause digestive problems in cats. It’s important to keep our pets safe by preventing their access to these small prey.

We can keep our homes free of flies and spiders by regularly cleaning and vacuuming, sealing cracks and holes where insects can enter, and using insect repellents or traps as necessary. By doing so, we can ensure that our beloved pets stay healthy and happy.

In addition to these necessary precautions, we can encourage our cats’ hunting instincts by providing them with interactive toys, puzzle feeders, and playtime. However, when it comes to flies and spiders, it’s best to keep them out of reach.

Protein Supplementation

One of the most common questions is why cats enjoy snacking on spiders and flies. While these small insects may not seem like a significant source of nutrition, there are several reasons why cats may find them appealing.

First and foremost, cats are natural predators with an innate hunting instinct. This instinct is so strong that even domesticated cats will engage in playful hunting behaviors with toys or household objects. Therefore, when they see a spider or fly buzzing around, it triggers their predatory instincts, and they may attempt to catch and eat it.

Interestingly, cats don’t necessarily consume spiders and flies for their protein content. Rather, the act of hunting itself can be satisfying for them. They enjoy the thrill of the chase and the sense of accomplishment that comes with capturing prey.

Why Do Cats Eat Spiders And Flies-2

In addition to being natural predators, cats are also curious creatures that investigate anything that moves or catches their attention. Given the small size and easy accessibility of spiders and flies, it’s no surprise that cats would want to investigate them further by sniffing or even tasting them.

While it’s generally safe for cats to eat small insects like spiders and flies, pet owners should be vigilant about what their feline friends are consuming. There is always a risk of ingesting something toxic or harmful, so it’s crucial to monitor their behavior and ensure they’re not consuming anything dangerous.

Ultimately, while spiders and flies may not provide significant nutritional value for cats, they can offer mental stimulation and entertainment. As long as pet owners maintain a balanced diet high in protein from reputable sources and keep their feline friends safe from harm, there’s no harm in allowing them to indulge their hunting instincts every once in a while.

Boredom and Lack of Stimulation

Surprising as it may seem, boredom and lack of stimulation are often the culprits behind this strange habit.

Domesticated cats are primarily indoor creatures, which can limit their opportunities for exploration and hunting. This lack of mental and physical stimulation can lead to boredom, causing them to seek out activities that provide some form of excitement. For cats, hunting is a natural instinct, and when they cannot fulfill this urge, they may resort to destructive behavior or excessive grooming. Eating spiders and flies can serve as a substitute for the thrill of the hunt.

Insects also fascinate cats with their buzzing and wriggling movements, providing entertainment for our feline friends. Playing with them can be a source of enjoyment for cats who are bored or seeking stimulation.

So, how can you prevent your cat from munching on these creepy crawlies? Here are some tips:

  • Provide plenty of toys: Toys that encourage play and exploration can keep your cat engaged and mentally stimulated. Puzzle feeders, scratching posts, interactive toys, or even a simple cardboard box can keep them entertained.
  • Create safe outdoor spaces: If possible, consider creating an outdoor enclosure or safe outdoor space for your cat to explore. This provides opportunities for natural behaviors like climbing and exploring.
  • Rotate toys regularly: Cats quickly lose interest in the same toys over time. To keep things exciting, rotate your cat’s toys regularly.
  • Play with your cat: Spending time playing with your cat can provide much-needed mental and physical stimulation. Use toys that mimic the movement of prey, like a feather wand or laser pointer.

Prevention Strategies for Cat Owners

However, this can sometimes lead to them consuming insects such as spiders and flies, which can pose serious dangers to their health. The good news is that there are several effective prevention strategies that you can implement as a responsible pet owner to keep your cat safe.

Firstly, keeping your cat indoors is one of the most effective ways to prevent them from catching and eating bugs. Not only does it keep them away from potential outdoor hazards like busy roads and fights with other animals, but it also reduces their exposure to insects.

Secondly, keeping your house clean and free of spiders and flies is crucial. These insects are attracted to dirty and cluttered spaces, so maintaining a tidy household can help reduce their presence. You can even use natural insect repellents like essential oils or vinegar to keep these bugs at bay in areas where they are likely to congregate.

Additionally, providing your cat with a well-balanced diet that includes all the necessary nutrients is important. A well-fed cat is less likely to hunt for insects out of hunger. You can also satisfy their hunting instincts by providing plenty of toys and interactive playtime.

Lastly, it’s important to monitor your cat’s behavior closely for any signs of illness or discomfort if you suspect they have eaten a spider or fly. Some insects can be toxic to cats, so it’s vital to act quickly and seek veterinary care if needed.

The Nutritional Value of Insects for Cats

It’s a fascinating topic, considering cats’ natural instinct to hunt and eat insects like spiders and flies. But while insects can provide some nutritional benefits for our furry friends, it’s crucial to understand why they should not be relied upon as a primary food source.

Firstly, let’s talk about the good news: insects can be an excellent source of protein for cats. As obligate carnivores, cats need animal protein to thrive. Insects like crickets and mealworms are particularly high in protein, containing up to 75% protein by weight. They also contain all the essential amino acids that cats need to maintain healthy muscles, skin, and fur.

Additionally, insects contain vitamins that are crucial for cats’ overall health. For example, crickets and mealworms are rich in vitamin B12, which is essential for cats’ nervous system function. They’re also an excellent source of vitamin A, which helps maintain healthy eyesight in cats.

Besides protein and vitamins, insects contain minerals that are vital for cats’ health. Crickets and mealworms are high in calcium, which is crucial for maintaining strong bones in cats. They also contain other minerals such as iron and zinc, which are important for cats’ overall health.

However, here’s the catch: while insects can provide some nutritional benefits for cats, they should not be relied upon as a primary food source. Cats require a balanced diet that includes all the necessary nutrients they need to stay healthy. Feeding your cat a diet that consists mainly of insects could lead to nutrient deficiencies and health problems over time.

So what should you feed your cat instead? Opt for a high-quality commercial cat food that is specifically formulated to meet your cat’s nutritional needs. Look for a food that contains high-quality animal protein like chicken, beef or fish along with essential vitamins and minerals. You could also talk to your veterinarian about adding a vitamin supplement or feeding your cat a raw food diet, but it’s crucial to do so under their guidance.

Potential Health Risks to Cats from Eating Insects

Cats are infamous for their love of stalking and hunting small insects like spiders and flies. However, as much as this behavior may seem harmless, there are potential health risks that come with it.

One of the most significant concerns is that insects can carry harmful bacteria or parasites that can cause illnesses in cats. For example, spiders may contain venom that can be toxic to cats if ingested. Additionally, flies can carry diseases such as salmonella or E. coli, which can cause serious gastrointestinal issues in cats.

Furthermore, some insects may have been exposed to pesticides or other chemicals that can be harmful to cats if consumed. Pesticides can cause a range of health problems such as vomiting, diarrhea, or even neurological damage in severe cases. To protect your furry friend from potential harm, it’s crucial to keep your home free of pests and avoid using chemical sprays.

Another risk associated with cats eating insects is the potential for intestinal blockages. This can occur if a cat ingests an insect that is too large or has sharp parts that can get lodged in their digestive tract. In such cases, immediate veterinary intervention may be necessary to resolve the issue.

As a responsible cat owner, it’s essential to prioritize your pet’s safety and well-being. While it’s natural for them to indulge in their hunting instincts, it’s recommended to discourage this behavior and provide alternative forms of stimulation for your cat’s natural instincts.

Common Prey that Cats Hunt

Cats are fascinating creatures with an innate ability to hunt and capture prey with grace and ease. Their sharp senses, agility, and natural hunting instincts make them skilled hunters, capable of chasing and catching small animals such as mice, birds, and rabbits in the wild. However, in urban environments, cats often resort to hunting smaller animals such as spiders and flies.

Spiders and flies are common prey that cats love to hunt and eat. These small insects are easily accessible to cats and can be found in the same environments as they are, such as homes or gardens. Moreover, spiders and flies move quickly, making them a thrilling target for cats who enjoy chasing after fast-moving prey.

Although cats do not necessarily eat these insects because they’re hungry, it provides them with a sense of satisfaction when they catch their prey. It’s like they are following their natural instincts to hunt and kill.

It’s essential to keep in mind that while eating spiders and flies is generally safe for cats, certain species of spiders can be poisonous. Consuming them can pose a serious threat to your furry friend’s health. Similarly, flies can carry diseases that can be harmful to both cats and humans.

As a responsible pet owner, there are measures you can take to discourage this behavior in your cat. Keeping your home pest-free is one way to minimize the chances of your cat hunting these insects. You can also provide alternative forms of stimulation to satisfy their hunting instincts such as interactive toys and puzzle feeders.


To sum up, cats are captivating creatures that possess an innate hunting instinct that drives them to hunt and capture prey. Although domesticated cats prefer larger animals in the wild, they often resort to hunting smaller prey such as spiders and flies found inside their homes. While this may seem peculiar, it is essential for cat owners to understand why cats do this.

One reason why cats eat spiders and flies could be their natural hunting instincts. These insects serve as easy prey items that provide a source of protein – a vital nutrient for cats. However, pet owners must exercise caution when allowing their cats to snack on spiders since some species can be dangerous and carry venom that can harm them.

Another reason behind this behavior could be boredom and lack of stimulation. Cats require mental and physical stimulation to prevent destructive behavior or excessive grooming. Eating spiders and flies can substitute the thrill of the hunt and provide entertainment for our feline friends.

While insects can provide some nutritional benefits for cats, they should not be relied upon as a primary food source. A well-balanced diet high in protein from reputable sources is essential in maintaining overall health.

As responsible pet owners, we should offer our feline friends plenty of opportunities for mental stimulation and exercise while keeping them safe from potential harm caused by consuming harmful insects.