Spiders Poisoning Average Cost

From 38 quotes ranging from $300 - 5,000

Average Cost


First Walk is on Us!

✓ GPS tracked walks
✓ Activity reports
✓ On-demand walkers
Book FREE Walk

Jump to Section

What is Spiders Poisoning?

Most of the spiders in the United States do not have severely painful bites, and only a few of the spiders in the United States are poisonous to the point of the dog requiring serious medical attention and possible hospitalization. Usually when a spider bite occurs, the spider doesn’t stay around and it is hard to identify that that is the problem the dog is having.

Even though many of the spiders are relatively harmless or may only require a small amount of medical attention, there are a few poisonous ones. These include spiders from the widow group, and the most common spider from this group is black widow spider. Another poisonous spider comes from a brown spider group called the brown recluse spider. Tarantulas are known to be relatively harmless to humans even though their bite is quite painful; however, dogs are more susceptible to tarantula venom than humans and immediate medical attention is required. Black widows, brown recluse, and tarantula bites can be very serious if they are not treated in a timely manner or at all. All three of these spiders can cause death if the dog is not taken to the veterinarian and properly treated.

Spider poisoning in dogs occurs when a spider, possessing toxic venom, inflict a bit upon a dog. The poison from the venom causes severe inflammation that requires immediate medical attention.

Book First Walk Free!

Symptoms of Spiders Poisoning in Dogs

When a dog becomes a victim of a poisonous spider, the symptoms will vary from mild to severe. Symptoms depend on the type of spider that has bitten the dog. Symptoms include:

  • Trouble breathing
  • Arrhythmia
  • Pain at the site of the bite
  • Muscle stiffness
  • Paralysis
  • Abdominal stiffness
  • Abdominal tenderness
  • Anxiety
  • Restlessness
  • Rapid and shallow breathing
  • Muscle cramps
  • Lesion at the site of the bite
  • Red ring around the bite area
  • Fever
  • Vomiting 
  • Seizures
  • Joint pain


It may be difficult to witness the actual spider bite, and oftentimes the type of spider that has bitten the dog may be unknown. Types of spiders that are poisonous to dogs include:

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

Causes of Spiders Poisoning in Dogs

The cause of spider poisoning in dogs is the injection of toxic venom into a dog by biting. There are many species of spiders, and the different species have a different level of poison in the venom. The spider bite is toxic because of:

  • The fangs penetrate the skin and inject venom from the holes in the fangs
  • The venom is projected through ducts inside the fangs, which lead to the venom glands
  • Neurotoxin enters the dog’s bloodstream and can lead to the harmful symptoms, including paralysis and sometimes death

Diagnosis of Spiders Poisoning in Dogs

If your dog is showing any symptoms of a spider bite, it is important to take him to the vet immediately. The veterinarian will ask you questions pertaining to the spider bite, such as if you witnessed the spider around the dog. More than likely the symptoms will occur after the bite, and unfortunately it is common to not see the spider that bit the dog. The veterinarian will perform tests and then rely on the dog’s clinical signs to make the diagnosis.

The veterinarian will perform a biochemistry profile (to check organ function), blood work, test for electrolytes, and urinalysis. While these tests do take time to come back and possibly show any venom, the veterinarian must go ahead and treat the dog according to the dog symptoms, including the site and area around the bite.

Treatment of Spiders Poisoning in Dogs

To treat a spider bite, the methods may vary depending on the type of spider that bit your dog. For example, if a brown recluse spider bit the dog there will be other methods of treatment since the spider is highly poisonous. 

The treatment for your dog’s spider bite will depend on the severity, how the dog is reacting to the bite, and the type of spider.


The first thing the veterinarian will do is thoroughly cleanse the affected area around the bite.

Pain Medication

Pain medication along with an ice will be given. Corticosteroids can also protect against further impact upon the system. Muscle relaxants or morphine may be given to help with the pain.


In order to prevent a serious infection, especially in cases of brown recluse spider bites, antibiotics may be given. Dapsone inhibits the function of leukocytes and is the antibiotic of choice to treat brown recluse spider venom. Anti-venom may be given for bites from black widows. Also, tetanus antitoxin is often given especially if the dog has never had a tetanus shot.

Oxygen Therapy

Oxygen therapy may be given to help the dog breathe in cases of severe spider bites.


Along with the above methods of treatment, the veterinarian may administer fluids to the dog through an IV. This will help keep the dog hydrated, and along with the oxygen therapy, will help keep his blood pressure down.


The type of spider that has bitten your dog will determine if there is an antivenin to help treat the spider bite, for example, there is an antivenin for black widow spider bites.

Recovery of Spiders Poisoning in Dogs

In terms of recovery and management for spider bite poisoning, it depends on the type of spider that inflicted a bite upon your dog. It also depends on the severity of his condition. If the dog was able to get to a veterinarian after the bite within a timely manner, prognosis is good. Once your dog comes home after treatment, it is important to keep checking the site of the bite for any changes in to alert the veterinarian if new symptoms or behavioral changes occur. The veterinarian will give instructions on how to properly care for your dog after treatment, and may request a follow-up appointment to check on his healing.

Spiders Poisoning Questions and Advice from Veterinary Professionals

Great Pyrenees
1 Year
Fair condition
0 found helpful
Fair condition

Has Symptoms


my puppy was running around the house shaking his head roughly, when i came up to him i found a very large common black house spider. he killed it but I'm very unsure if the spider bit him... i couldn't see anything right away on his nose or lips, but then again i don't know how long it takes for the symptoms to kick in. he has black and white speckled lips, nose, and gums because of his breed mixing

Our dog got bit by something outside but we did not noticed until two weeks after

My dog had puppies and one of them has a swollen arm and looks like she got bit from something but I'm not sure what it is. I don't know what to do or how to treat her because she's only 2 weeks old and I don't have money for the vet

Add a comment to wrangler's experience

Was this experience helpful?

Pit bull
4 Months
Mild condition
0 found helpful
Mild condition

Has Symptoms

very mild vomiting
swollen face
occasional raspy breaths

i'm not entirely sure what brought this, i'm assuming a spider bite since they're so plentiful in my home.. booger is acting normal, maybe slightly lethargic but he's an abnormally lazy puppy so it's hard to tell. he had moderate to severe hives for a very short period of time, mainly on his lower belly, maybe lasted ten or fifteen minutes, then they subsided but have come back worse again in different places, specifically the armpits & the lower part of his belly. he wasn't very interested in drinking any water. he had rapid hiccups, or what i would assume them to be, for a few brief seconds & then vomited very small amounts of a light yellow foamy liquid, three or four times back to back. acts totally normal, doesn't seem to be in any pain whatsoever, still walking around, even running after me wagging his tail. breathing is fine until he lays a certain way, then it's almost like he's a little congested.. going to buy some Benadryl for now, he doesn't have any discoloring of the gums they look pink & normal so breathing is still good, airways open. i can't find a bite, would it be possible that the spot he were bit would be painless? i've rubbed my hands all over his body, pressed gently over it again with my fingers, & then again with more force. he showed no signs of any tender places or pain. is this normal for hives to do, come & go with various severities? i think if he were to become fatally ill, it would have either happened by now or his condition would have worsened. any ideas what this could be, if not a spider bite? should i be concerned if he doesn't show signs of the symptoms getting worse? right now he is asleep, dreaming like he usually does. he has yet to act any different.

Add a comment to booger's experience

Was this experience helpful?

Mixed breed
7 Years
Critical condition
1 found helpful
Critical condition

Has Symptoms

Weak back leg

Hi there. My dog was fine and playing this afterboon as usual. Now he is struggling to walk and get up. At first I though he might have hurt a muscle in his back leg, but now i am getting more worries, and probably more paranoid, that a spider but him. We have black & brown widows in our area and brown recluse. I have not seen any, but i know they are probably lurking somewherin the garden. He still has a great appetite and is standing up to go do huis number 1 outside, however he really struggles to get up. Can a spider bite kill him overnight? We do not have any vets available nearby on a Sunday evening. Im just really worried.

If my dog got bit by a brown recluse will he will you get us feeling back if he hasn't been treated cuz we didn't know

Add a comment to Bear's experience

Was this experience helpful?

German Shepherd
2 Years
Moderate condition
0 found helpful
Moderate condition

Has Symptoms


hello, I just saw what appeared to be a Wolf Spider bite my 2 year old German Shepherd on the nose. He just was neutered 2 days ago and is on pain meds, inflammatory meds, and antibiotics. I only think it bit him because he made a whimpering Sound and knocked it off. Should I be worried and take him back to the vet or what? Please help!

Dr. Callum Turner, DVM
Dr. Callum Turner, DVM
3320 Recommendations
There is varying information on the severity of wolf spider bites with many sources saying the bites are severe with one or two sources saying they are lethal; I would recommend visiting your Veterinarian as soon as possible for an examination and treatment. Regards Dr Callum Turner DVM www.qm.qld.gov.au/Find+out+about/Animals+of+Queensland/Spiders/Modern+Spiders+Infraorder+Araneomorphae/Wolf+Spiders#.WvbGRNMvxTY

Add a comment to Axcel's experience

Was this experience helpful?

Little man
Minuture schnowzer
10 Years
Critical condition
0 found helpful
Critical condition

Has Symptoms

A swelled toung and death

I came home today and my dog had died. He was fine. Yesterday and last night.the only thing i found. In his pen was a wolf spider. His toung was really swelled

Dr. Callum Turner, DVM
Dr. Callum Turner, DVM
3320 Recommendations
As far as I am aware, Wolf Spiders are poisonous but not lethal; however a bite may cause some swelling which may obstruct airflow or may cause an allergic reaction. I cannot say whether or not a spider bite was the cause of death but would recommend having your Veterinarian perform a necropsy on Little Man to determine a cause of death. Regards Dr Callum Turner DVM

Add a comment to Little man's experience

Was this experience helpful?

German Shepherd Dog
4 Years
Mild condition
1 found helpful
Mild condition

I adopted a German Shepard 2 months ago. At the time the current caretaker said she had a spider bite on her leg and to keep clean it with peroxide - which I did for the next week or so. It seemed healed. But even though it's seems mostly disappeared she licks it a lot still, it's a dark color on the fur where the bite was located- I'm just worried :(

Dr. Callum Turner, DVM
Dr. Callum Turner, DVM
3320 Recommendations
Dogs usually recover from spider bites relatively well and healing of bite wounds are usually simple unless there was a secondary infection or other complication. I cannot say why Freya is biting at the bite site, but there may be something there which she can feel or smell which is irritating her. A visit to a Veterinarian may be useful to check the area, but you need to keep stopping her from biting at it and keep an eye on it. Regards Dr Callum Turner DVM

Add a comment to Freya's experience

Was this experience helpful?

5 Years
Moderate condition
2 found helpful
Moderate condition

Has Symptoms

Possible polydipsia

I adopted a 5 year old blue nose pitbull from animal control in NYC 2.5 weeks ago. He had CIRDC and completed his antibiotics. When he came home, he had a spot on his R thigh that he was edgy about if we pet over it. 2 days ago, his fur started looking funny on that spot and since that time, the skin has peeled away completely. I think it is down to the muscle. I am a people nurse, and the wound looks healthy and not infected, with good blood flow to the wound edges. I've been cleansing 2x daily with chlorhexidine 2% and applying bacitracin x 24 hours. My thought is that he may have been bitten by something...rat, spider, etc. At this point, I'm wondering if he should be seen by a vet or only if it worsens.

Dr. Callum Turner, DVM
Dr. Callum Turner, DVM
3320 Recommendations

It would be best to visit your Veterinarian as there is always the danger of secondary infection and to assess if there is any other underlying cause. For the meantime, continue to clean the wound as you are doing to make sure it is free of dirt and debris. I cannot really comment further without examining the wound. Regards Dr Callum Turner DVM

Add a comment to Ben's experience

Was this experience helpful?