What research shows
Like snakes, over-represented relative to real exposure — a common argument for inbuilt threat responses.
Animals
Dreaming about spiders
Entrapment, patience, or something being woven.
The psychological reading
The web matters as much as the spider: a situation you feel caught in, or one you are patiently constructing.
What tradition claimed
In much of Europe a spider was good luck and money coming.
Included as cultural history. Traditional dream books are frequently ominous and have no predictive value.
How to record a dream, why the feeling matters more than the content, and when recurring nightmares are worth a doctor rather than a dictionary — set out once on the main page.
Before you look anything up
How the dream felt matters more than what was in it. The same image can arrive as comfort or as threat, and that difference tells you more than any entry in a dictionary — including this one.