They hide and then they sneak up behind and grabs them
All spiders, technically, are poisonous, but I do not believe barn spiders are dangerously poisonous.
barn cats
Most carnivorous (meat-eating) animals hunt. Other carnivores will wait for food to come to them (for example, spiders).
A web spinning spider's eyes can't move so, therefore they cannot hunt. There are species of spiders that can hunt because their eyes can move in different directions.
Jumpimg spiders, wolf spiders, fishing spiders, cobweb spiders, barn spiders, cellar spiders, funnel spider (grass spider), garden spider.
Yes, they do.
barn owl mostly hunt birds, fish, reptiles, and insects.
Insects like other spiders. They hunt on the ground.
Like all spiders, a barn spider is poisonous, but not usually particularly harmful to humans. The bit of a barn spider may cause some swelling and redness for a day or two, but it is unlikely to cause a human or an animal to become ill.
they hunt in total dark so they will not get attack by their own predator.
Barn owls will not hunt squirrels because squirrels are active in the day and barn owls are active at night.
Most spiders hunt insects. Very large spiders sometimes catch tiny animals.