![]() Clinical signs that your dog has been bitten by a spider vary widely depending on what species of spider delivered the bite and can range from a simple red bump to vomiting and muscle spasms. They can bite when they feel threatened, however, so incidents of dogs getting bitten by recluses often occur when a pup accidentally lays down on top of one of these spiders or invades their living space, according to VCA Animal Hospitals. They can be identified by their yellow-brown color and often have a violin-shaped marking on their back.Īs the name suggests, recluse spiders are generally reclusive and not considered aggressive. Female recluses are also the larger and more venomous of the two recluse sexes. Similar to the Black Widow, Brown Recluses prefer dark, warm hiding places in locations like closets, where they can live undisturbed. They can be found worldwide and throughout the U.S., but they are largely concentrated in southern parts of the Midwest. ![]() While the most common recluse is the Brown Recluse, there are six different species of these spiders found in the U.S. Recluse spiders, or Loxosceles, can also cause harm to your furry friend. Immature female Black Widows do not always have this bright marking yet but are still considered venomous. These arachnids can be identified by their dark grey or black bodies with a red or orange hourglass marking on their abdomen. They tend to live in warm, dark, secluded places-quiet corners of the basement, attic, or garden shed are perfect for these pests.įemale Black Widow spiders are often significantly larger in size than their male counterparts, as well as more venomous. In the U.S., Black Widows generally live in the south and west regions of the country but can be found in all 50 states. These spiders are typically found in tropical and temperate environments throughout the world. There are five species of widow spiders, or Latrodectus, in the U.S., the most common being the Black Widow. However, the Merk Veterinary Manual notes that the mouth parts of Black Widow and Brown Recluse spiders are of sufficient size to allow penetration of the skin and deliver sufficient quantities and or potencies of toxin to result in severe harm. As noted earlier, the vast majority of spider species throughout the world are indeed venomous but cannot cause harm to large mammals such as people and their pets. In the United States, there are two predominant types of spiders that can pose a serious threat to dogs: widow spiders (particularly Black Widows) and recluse spiders (especially Brown Recluses).
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