These spiders occur in various Pacific Islands, including Hawaii and Guam. ... You may feel pain and notice redness where the spider bites you, but these usually disappear quite quickly.

Brown widow spiders are venomous, but their bites are considered much less dangerous than other venomous spiders.

But bites from any kind of spider have the potential to cause an allergic reaction in some people, so you still want to avoid getting bit. Wolf spiders will bite if they feel threatened.