Feats and Classes for Natural Weapons

[Illithilich]

Exactly what the title says. What options are there in 3.5 for a character who uses natural weapons (specificly claw attacks).

[Godskook]

Psychic Warrior -or- Totemist are great options for Natural Weapon users. Both take different routes if you want to emphasize that class.

[gorfnab]

Bloodclaw Master, Soul Eater, and Thayan Gladiator are some prestige classes that work with natural weapons.

[Xynphos]

I would suggest warshaper.

[Thomasinx]

You could try the Shifters from Eberron. (Eberron campaign setting and Races of Eberron)

There's a lot of fun to be had with all the many shifter feats. Razorclaw shifter for claw attacks, gorebrute shifter for horn. Take extra shifter trait and you can have both.

Depending on the flexibility of the build, weretouched master could be an interesting entry.

[Thurbane]

Black Blood Cultist (Champions of Ruin) seems to be quite popular for natural weapon builds.

[Gnome Alone]

I believe Kensai can have their bonded weapons be their natural ones.

[Mithril Leaf]

Half-Daelkyr get free symbiots that give natural attacks at time, plus they qualify for aberration feats and the soul-eater class which rocks natural weapons hard.
This thread may have some handy stuff. (http://www.giantitp.com/forums/showthread.php?p=7066595)