The material below is Open Game Content from a 3PP Source
Advanced Creature (CR +1)
Creatures with the advanced template are fiercer and more powerful than their ordinary cousins.
Quick Rules: +2 on all rolls (including damage rolls) and special ability DCs; +4 to AC and CMD; +2 hp/HD.
Rebuild Rules: AC increase natural armor by +2; Ability Scores +4 to all ability scores.