Spiders play an important role in ecosystems across the United States, but a few species are known for having medically significant venom. In certain states, environmental conditions make it more ...

This video examines the most venomous spiders found in the United States and explains what makes them potentially dangerous to humans. It focuses on venom chemistry, including neurotoxins and ...

Arizona is home to over a dozen tarantula species. These primarily nocturnal creatures are most active during the late summer and early fall mating season. Although venomous, Arizona tarantulas are ...

(NEXSTAR) — As the onset of summer nears, so too do warmer temperatures and mating season for many of the nearly 900 spider species in Texas. Even though you’re unlikely to cross paths with many of ...

A: Cats are especially sensitive to the toxin of the black widow spider, the most venomous spider in North America.

Q: Our indoor-outdoor cats are fascinated by the spiders and spider webs around our house. I am concerned some of the black, ...