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Fleas Bite vs Bed Bug Bite: 5 Flea Bite Characteristics & 4 Bed Bug Bite Characteristics

August 16, 2016

When trying to determine which bug bite you have, a flea bite vs bed bug bite comparison can be very difficult. Both of these pests are common all around the world, but there are ways to distinguish between each bite type.

How to Tell If You Have Fleas

Fleas are small and love blood – it’s their lifeline. And fleas love warmth, so they’ll attach to animals first and make them their host. If you have a dog or cat, a simple look through their coat will be able to tell you if you have fleas.A dog on white is thinking problems of insects.

  • Do you see little bugs crawling through your pet’s coat?
  • Is your animal scratching often?

If you answered yes to any of these questions, you’ll likely have a flea infestation. But there is a chance a lone flea bit you first, or that you don’t have an animal to examine. In this case, you ‘ll need to be able to determine a flea from other pests by their characteristics.

If you see a pest, you’ll want to use a piece of clear tape to immobilize the pest so you can try and tell what type of pest you’re dealing with. The common characteristics of fleas are:

  • Reddish brown in color
  • 5mm – 3mm in length
  • Oval in shape

And fleas hop quickly and effectively.

Read more about Fleas

What Do Flea Bites Look Like?Domestic dog is cleaning itself by biting the fleas.

A fast and easy way to know what these bites look like is to take a look a flea bite pictures. These pictures will give you a good indicator of what these bites really look like.

The characteristics of a flea bite are:

  1. Flea bites look like a cluster of mosquito bites.
  2. Flea bites look like a dot with a red (dark) center.
  3. Bites are randomly placed on the body.
  4. Bites will begin to swell in less than an hour and be red in color.
  5. Flea bites are very itchy.

In some cases, a flea bite can progress into an open sore or blister. This isn’t always the case, but it does happen with some sufferers.

Read more about Flea Bites

How to Know If You Have Bed Bugs

Bed bugs also love to feed on your blood. These pests are like vampires that, unsurprisingly, attack in the night to feed on you. Nocturnal, these bugs are awake when most people are asleep, and since they love to make beds their home, you’ll be food for them while you sleep.

Unlike fleas, bed bugs are brought into the home primarily by humans.

And when you see a bed bug, they won’t jump like a flea. Bed bugs like to crawl around, and this is one of the easiest ways to be able to tell if the pest you’ve encountered is a bed bug or a flea.

If the pest hops or jumps, it’s not a bed bug.

Bed bugs will crawl on to their hosts, feed, and crawl back off. Fleas can jump great distances, which allows them to feed on a host and escape quickly after.

In terms of characteristics, a few of the most common characteristics of bed bugs are:

  • Reddish-brown coloring.
  • 5mm – 5mm in length.
  • Flat and seed shaped.

Since the bed bug and flea are similar in length, it can be easy to mix the two up when you see them. The good news is that if you don’t see the bug jump – fleas jump quickly when approached – it’s likely a bed bug that is invading your home.

Read more about Bed Bugs


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What Do Bed Bug Bites Look Like?Bed bug biting on someone's skin.

A quick search online will allow you to view enough bug bites pictures to be able to confidently distinguish between a flea bite vs bed bug bite. A few of the tell-tale characteristics of a bed bug bite are:

  1. Bed bug bites are flat and red – they look like welts.
  2. Bites often appear in straight lines with 3 – 4 bites in a row.
  3. Bites can take days to present.
  4. Gradual itching will start to appear and get worse.

Bed bugs like to come out when people are sleeping, and these pests are found in crevices, in upholstery and often in the bed or in the bed frame, which is where their name comes from.

Unlike fleas, bed bugs will only come out to feed every 7 – 10 days on average. Females are relentless, and they’ll feed at all times of the day and night without stopping if allowed.

Difference Between Flea Bites and Bed Bug Bites

The bites have been discussed in great detail, and the key points to remember before taking action to get rid of these pests are:

  • Flea bites are at random.
  • Bed bug bites will often be 3 or 4 in a row or straight line.
  • Bed bug bites take a few days to appear.
  • Flea bites appear within an hour and itch immediately; bed bug bites start to itch progressively.
  • Bed bug bites are raised and flat.
  • Flea bites are raised and swell quickly.

Another difference between these bites doesn’t have anything to do with appearance. Bed bugs are pests, and they’ll feed on you for hours if you allow them. But these bugs pose little risk to human health because they have not been shown to be able to transmit diseases to humans.

Fleas, on the other hand, have been shown to be able to transmit:

  • Cat-scratch fever
  • TyphusBlackboard with word typhus and stethoscope.
  • The plague

Most flea bites are simply uncomfortable and won’t pose a risk to a human. But there is a small chance that a disease will be transmitted. If you get bit by a flea and start coming down with sickness or fever, a trip to your physician is recommended. Since the plague and many of the diseases that fleas transmit are not as prevalent as they were in the past, you’re likely at a lower risk of contracting these diseases.

When bed bugs bite a human, the delay in the appearance of the bite is due to it causing an allergic reaction in the body. Humans are allergic to the bug’s saliva, and it takes a while for the anesthesia and anticoagulants to react.

【Learn More About Bud Bugs】

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