Melee◆ jaws +8 (unarmed), Damage 1d4+2 piercing plus Knockdown
Surge of Speed◆◆ The wolf skeleton Strides three times, but it's Off-Guard until the start of its next turn.
Knockdown◆
Source: Pathfinder Monster Core 2
Running this fight? Add the wolf skeleton to the initiative tracker: type its name and the AC, hit points and Perception for initiative fill in, and the book button shows this stat block mid-fight.