Search in excerpt. Alternate names Loxosceles, spider, sphingomyelinase D, venom. Toxicity to pets The brown recluse spider Loxosceles reclusa is found throughout the southern Midwest region of the United States.
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They tend to hide in dark, secluded areas and usually only bite when they feel they are threatened or their area is invaded. Bites often occur when spider is trapped in bedding. The specific type of venom of the brown recluse spider is not fully understood, and the toxicity is not clear except it is known to destroy the tissues surrounding the bite.
Usually, the dog does not realize he has been bitten. A while after the bite, a reddened area develops, sometimes accompanied by fever and nausea.. The primary damage is specific to the area around the bite. Underlying muscle tissue may die and become infected, and some bleeding in the area may occur. With or without treatment, the wound may take weeks to heal. Diagnosis is based on the appearance of the skin wound and the possible access to brown recluse spiders.
Generally, dogs do well and recover from brown recluse spider bites but full recovery may take weeks. It's usually hard to spot spider bites on dogs because of their fur. And even if you see a venomous spider on your pet, you may not notice any symptoms for hours or days after your dog was bitten. But there are really only two that we worry about in the U. The bites from a black widow or a brown recluse can cause significant injury," Roberts says.
Here are the signs of a venomous spider bite from one of these varieties. The bite of a brown recluse is often painful. So when bitten, your dog may yelp or later be seen licking or biting at the area. The venom these spiders emit helps them digest their prey, Roberts explains. So it causes skin and muscle cells to die, resulting in tissue damage. Initially, the bite is red and swollen.
Then the tissue starts to die, beginning from the bite location and spreading out from there. The center of the lesion will change in color from pink to darker red or black and then white as venom progresses outward.
Sometimes it takes on a bullseye appearance or even blisters. Your dog may also vomit and act lethargic. Usually, there's no pain associated with a black widow bite in dogs, says Roberts. You won't see a red bump or any sort of local reaction. But if the spider has injected its neurotoxin, symptoms will develop later and include muscle pain and spasms, difficulty walking drunk walking , paralysis, and tremors.
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