The racial ability Claws also qualifies for any skill requiring a Weapon Skill.

 
The list of Weapon Skills chart:

 

WEAPON SKILLS	Fighter	Scout	Rogue	Adept	Scholar	Spellsword	Artisan	PREREQUISITE
Archery	6	6	6	8	12	8	8	none
Florentine	4	6	6	6	8	6	6	none
One Handed Blunt	3	4	4	5	6	5	5	none
One Handed Edged	5	5	5	7	10	7	7	none
One Handed Weapon Master	7	8	8	10	14	10	10	none
Polearm	8	12	12	12	16	12	12	none
Shield	6	10	10	10	12	10	10	none
Small Weapon	2	2	2	2	2	2	2	none
Staff	4	4	4	4	4	4	4	none
Style Master	10	15	15	15	20	15	15	none
Thrown Weapon	2	4	4	4	4	4	4	none
Two Handed Blunt	6	8	8	8	12	8	8	none
Two Handed Sword	8	12	12	12	16	12	12	none
Two Handed Weapon Master	10	16	16	16	20	16	16	none
Two Weapons	2	4	4	4	4	4	4	Florentine
Weapon Master	15	20	20	20	25	20	20	none