"Ninja" is an acquired template that can be added to any creature with a Dexterity of 10 or more (referred to hereafter as the base creature).
A ninja uses all the base creature’s statistics and abilities except as noted here. Do not recalculate the creature’s Hit Dice, base attack bonus, saves, or skill points if its type changes.
Size and Type
Animals or vermin with this template become magical beasts, but otherwise the creature type is unchanged. Size is unchanged.
Ninja gain a climb speed of 10 ft. If the base creature has a climb speed, use the better value.
Flip out and kill people (ex) A ninja who is hiding can, as a full-round action, move its speed and make a full attack at the end of that attack, provided that all of the ninja's targets are flat-footed.
Strength in solitude (ex) When a ninja is killed, all allied ninja within 120 ft receive a +1 morale bonus. This morale bonus stacks with itself, but not with other sources of morale bonuses.
Ninja gain darkvision out to 60 feet.
Increase from the base creature as follows: Dex +2.
A ninja gains a +4 racial bonus on Hide and Move Silently checks and a +8 racial bonus on Climb checks. It can always choose to take 10 on a Climb check, even if distracted or endangered.
Ninja gain Improved Unarmed Strike and Exotic Weapon Proficiency (shuriken) as bonus feats.