Thick-skinned

Type: Monstrous
Source: Savage Species

Your tough hide grants improved damage reduction.

Prerequisite: Damage reduction.
Benefit: Your existing damage reduction improves by 2, as indicated on the table below.

Existing DR	After Thick-Skinned
x/silver	x+2/silver
x/+1	x+2/+1
x/+2	x+2/+2
x/+3	x+2/+3
x/+4	x+2/+4

Special: You can gain this feat multiple times. Each time you take it, it improves your damage reduction by 2, up to a maximum of twice your original damage reduction.