Pest Control

Do Dogs Eat Spiders? (Yes, And Spiders Bite Dogs Too)

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Do Dogs eat spiders? What Do you think? Sometimes dogs eat the spiders and sometimes not. In fact, dogs find them more attractive as playthings than food. However, if your dogs ingest the spiders, it will not create any harmful effect for them except black widow spider or  a brown recluse spider. However it is difficult to identify the exact type of spider which your dogs ate. 

If your dogs are interacting with the spiders, spider bites would be a hassle  for them. In case you spot your dog hanging around with spiders, you need to keep your furry friends under your observation and get your vet’s instructions to treat them.

Dogs Eat Spiders

Should I let my dogs eat spiders?

You should not let your dogs eat any spiders.  However, it will not create any trouble if your dogs eat the spiders. Having said that, if the spider bite the dog’s mouth , spider venom will release. In case, if your pets go through this condition and show some signs of lethargy or vomit, it could be due to dogs eating the spiders.

Can eating spiders hurt dogs?

They rarely cause problems and hurt the dogs. However, if they bite them in the mouth, chances are that spider venom could malfunction and cause problems when they digest the food. Further dogs may show signs of lethargy and end up vomiting too. On the other hand, if they consume a black widow or a brown recluse, it will be harmful for the dogs.

What should I do if my dog ate a spider?

First thing you need to do is to keep your dogs under your observation for some time and see whether they show any reactions. Chances are that they may show  some reactions as they could sometimes  suffer from stomachaches, hence it would be better if you could bring them to your vet and get that opinion. 

Dogs are resilient animal species. However, if the spiders bite him, they may not have any major repercussions. However, in case your dogs seem to be lethargic and disoriented and seem to be breathing awkwardly, you need to immediately  go consult your vet.

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What spiders are poisonous to dogs?

  • Brown recluse.
  • Black widow.
  • Red widow.
  • Brown widow.
  • Wolf spider.
  • Brazilian wandering spider.
  • Yellow sac spider.

Can spiders eat dogs?

Spiders such as black widow spiders could eat (bite) your dogs. Chances are that they could be fatal to the dogs if you do not treat the dogs immediately.

How do you tell if your dog has been bitten by a spider?

Spider bites may be different from one spider species to the other species. To elaborate further on this, if we take brown recluse spiders, they are poisonous for humans since they can create an irritating skin reaction among the humans.

However, many spider species may not be harmful for dogs and dogs will not suffer from any pain. However, you need to keep them under your observation for 24 hours once the spiders bite your dogs. You can still look out for signs if your dogs are having any negative reactions to them. Following are the signs of spider bites. 

  • Skin inflammation or irritation
  • Swelling, warm to the touch
  • Bruising or  reaction for a pain when you try to touch them
  • Nausea or vomiting
  • Fever  
  • Lethargy , any behavioral change

In case you come across these symptoms, you should consult your vet and seek their advice.

Ensure that you are handling your dogs carefully when you are putting them into the car and arrange all their progress reports of the symptoms they showed when you bring them to the doctor. Besides, if you know what type of spider it ate, it would be quite effective for your vet to  treat the dogs well.

What does a spider bite on a dog look like?

The signs of a spider bite may vary depending on the dog type and on the spider species as well.

  • Difficulty in  breathing
  •  Arrhythmia
  • Pain at the site of the bite
  • Muscle stiffness
  • Paralysis
  • Abdominal stiffness
  • Abdominal tenderness
  • Anxiety
  • Restlessness
  • Drastic changes in breathing
  • Cramps in the muscles.
  • Lesion at the site of the bite
  • Red ring around the bite area
  • Fever
  • Vomiting 
  • Seizures
  • Joint pain
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The spider bite could be toxic as their fangs penetrate  the skin and inject venom for the dogs whilst using their fangs. Furthermore, Venom will lead to venom glands through their ducts in the fangs. Further Neurotoxin can reach the dog’s bloodstream and create harmful symptoms such as causing paralysis . Further it could even result in the death of the dogs sometimes

Dogs Eat Spiders 1 1

Treatment for spider stings

Spider bites can get cured within a week’s time on their own. However, it would take a little longer for the recluse spider bites to get cured and chances are that it may even leave a scar as well. I can suggest the following first aid treatments to apply for the spider stings of the dogs.


First clean the wound whilst using mild soap and with some water. That will be the first thing that your veterinarian would do.


Consider applying an antibiotic ointment thrice a day (under your veterinarians instruction) so that you can avoid the infection spreading further. You could consider giving antibiotics if there is a serious infection particularly from recluse spiders. If the dogs suffer from black widows’ bites, anti-venom would be given to them. Besides, you can consider applying a cool compress over the bite for about 15 minutes on an hourly basis.

Ensure that you are using a clean cloth which is soaked with water. Unless you can use a cloth, which is also filled with ice. That will ease the pain and reduce swelling as well. 

Pain Medication (under your veterinarians instruction)

In case if you find their affected area is itchy, you may use antihistamine like diphenhydramine (Benadryl) or cetirizine (Zyrtec). Check whether the bitten area gets worse. In case it does, you need to apply antibiotics so that it would avoid any potential infection in the wound. Consider placing the affected areas in an elevated place.

Oxygen Therapy

Your vet may consider giving an oxygen therapy for the dogs to make their breathing easy especially if the spider bite is on a severe level.


Apart from the aforesaid treatments, your veterinarian may prescribe some fluids and he will supply them through IV.

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It will ensure that you keep the dogs hydrated and further help to keep the blood pressure down as well.


If a more dangerous spider has bitten your dogs, they may have to go through antivenin to treat the spider bites.

For example, your vet may prescribe antivenin if your dog has been bitten by a widow spider.

Do pigs eat spiders?

There is no record of pigs eating spiders. So I will not conclude it. But there is a chance that pigs will eat spiders. 

Do cats eat spiders?

Cats eat spiders quite often. However, spiders do not harm the cats though. Spiders can also bite the cat’s but not quite often though. Cat skin is thicker when compared to  human skin. Hence it is very unlikely that spiders can sting them through cat skin.

Dogs Eat Spiders

Related questions

Are wolf spiders poisonous?

Wolf spiders are not poisonous for people, and they do not create any threat. However, wolf spiders’ venom would be allergic to humans, but it would not create any harm for anybody though. Wolf spiders are large and if they bite, they will leave you with an adverse pain. However, if you have mild pain, swelling or itchiness it will disappear  in a short period.

Can I give my dog Benadryl for a spider bite?

You can use Benadryl to treat a spider bite after consulting a veterinarian. In fact, you can apply directly on the sting as well. Benadryl is an over-the-counter antihistamine which could treat swelling and itching as well. However, chances are that your dogs may suffer from  drowsiness if you treat them with Benadryl.  If you wish to apply Benadryl, one milligram for every pound of the pet’s weight would work well. Alternatively, you can use a Benadryl ointment directly in the sting as well.

Can a dog survive a black widow bite?

Dogs can survive if a black widow bite them, only if you manage to provide proper medication for them.

Credit to : laurenlovesanimalsx

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I'm Dr. Chamika and I'm a Researcher in Water quality, Aquatic organisms, and Environmental chemistry. Our highly qualified team is trying to educate you in various aspects of the day to day life in many ways. Their mission is to help others to enjoy their life to the fullest.