No, tent worms, webworms, and silk worms also spin webs and cocoons.
Well spiders that make webs only make the webs so that they can catch food; I'm presuming by 'hunting spiders' you mean spiders that kill in limb to limb action and/or biting/venom - these spiders kill stuff themselves and so don't need a web to survive... Survival of the fittest and shiz! Yeah that's just my opinion, but technically all spiders are hunters since they eat other animals ;)
When ever they want to . But some do not make webs
Spiders make unique webs because they do not want other spiders coming into their webs. They have a unique shape, design, and scent to keep other away.
trapdoor spiders
orb spiders
yes.
NO
Spiders spin webs not only for shelter but to capture their food. Insects, bugs, and other spiders get caught in these webs.
Spiders are the most common animals known to make webs. Some other animals like caterpillars, insects, and certain species of fish and birds also create webs for various purposes.
spiders make webs
yes they do
Yes, but they may only do so to nest and lay eggs. They are hunting spiders, meaning they do not rely on spider webs to catch their prey. Instead, they search and destroy insects.