Armor Class: 4 
Hit Dice: 3
Attacks: Bite (1d4); 2 Spikes (1d6)
Saving Throw: 14
Special: Poison; Charge; Trainable
Challenge Level/XP: 4/120
The giant spotted spiky spider is a fierce predatory spider that uses its muted coloring and spots to blend into the subterranean environment in order to catch its prey unaware.
POISON: The bite of the giant spotted spiky spider is moderately poisonous. When a bite is successfully inflicted on a target, the target must immediately make a saving throw or suffer 1d6 in poison damage (in addition to the 1d4 damage from the bite itself). Each round thereafter, the victim attempts a saving through. A successful save means that no damage is suffered that round and the victim is now safe from further poison damage (this is true for the round that bite is suffered as well).
CHARGE: The giant spotted spiky spider can charge opponents in one of three directions (left side, right side, or rear). One or two opponents may be attacked by the spikes of the spider during the charge, with each spike inflicting 1d6 in damage on a successful attack. The spider may not bite and charge in the same round.
TRAINABLE: Giant spotted spiky spiders are more intelligent than most spiders and can be trained if the training begins at the time they are hatched. They are often used for hunting, guard animals, and as mounts by smaller humanoids. Kobolds, in particularly, use giant spotted spiky spiders in all of these roles.