Yes, they are just as dangerous to animals as they are to humans.
All spiders, technically, are poisonous, but I do not believe barn spiders are dangerously poisonous.
barn cats
Jumpimg spiders, wolf spiders, fishing spiders, cobweb spiders, barn spiders, cellar spiders, funnel spider (grass spider), garden spider.
They get up to 1/4 to 3/4 in. per length but be careful, they are dangerous.
Tarantulas are spiders and they are not poisonous, but if they bite it will be painfull. They aren't more deadly no, but I know the Red Black Spider and the Brown Recluse to be quite dangerous.
Furrow spiders belong to the genus Larinioides.These spiders weave orb webs. No spiders that weave orb webs are dangerous to humans.
here are lots but some are: Black widows , Brown recluse. lots mainly look on the website discovery.ca
In the deserts of North America the Black Widow and Brown Recluse spiders are quite venomous. They generally are found in or near homes in the desert but could be encountered in the desert also.
you can identify the poisonous ones because they look a little more exotic than regular spiders, like they have markings on them or have different combinations of bright colors on them. regular spiders are just plain black, brown or dark colors.
The below list includes some of the most dangerous spiders to humans. 1) Brazilian Wandering Spider 2) Sydney Funnel Web Spider 3) Widow Spiders (including the Black and Brown Widows) 4) Sand Spiders (mainly, the Six Eyed Sand Spider) 5) Recluse Spiders (including the Brown Recluse) 6) Hobo Spiders 7) Redback Spiders 8) Mouse Spiders 9) Bird Spider (A type of Tarantula found in China)
No, Brown Recluse Spiders do not live in Pennsylvania.