n small animal 

Perception +6; darkvision, web sense

Skills Acrobatics +5, Athletics +2, Stealth +7

Str +0 Dex +3 Con +1 Int -5 Wis +0 Cha -4

Web Sense The dream spider has imprecise tremorsense to detect the vibrations of creatures touching its web.

AC  16; Fort +5, Ref +7, Will +4

HP 15

Speed 25 feet, climb 25 feet

Melee [>] bite +7 (finesse), Damage 1d6 plus dream spider venom

Ranged [>] web +7 (range increment 10 feet), Effect web trap plus dream spider venom

Dream Spider Venom (poison) Saving Throw DC 16 Fortitude; Maximum Duration 4 rounds; Stage 1 stupefied 1 (1 round); Stage 2 1d6 poison damage plus stupefied 1 (1 round)

Web Trap A creature hit by the dream spider's web attack is immobilized and stuck to the nearest surface until it Escapes (DC 16).

Bestiary 2, page 249.