Brown recluse spiders (Loxosceles reclusa) are venomous arachnids with a distinct look. While they aren't particularly aggressive, they may bite if trapped or aggravated, so you can be forgiven ...

The first signs of a black widow spider bite are usually a pinprick sensation, minor swelling, redness and a target-shaped sore, Medline Plus explains. Within 15 minutes to an hour of getting the bite ...