Inaccurate?

Endure Blows

( Draconomicon, p. 70)

[Monster]

You are adept at lessening the effects of blows.

Prerequisite

Toughness (PH) , CON 19, dragon type,

Benefit

You gain damage reduction 2/?. This stacks with any damage reduction you have from other sources. Damage reduction cannot reduce damage below 0.