n medium animal 

Perception +7; low-light vision, scent (imprecise) 30 feet

Skills Acrobatics +5, Athletics +7, Survival +5

Str +2 Dex +2 Con +2 Int -4 Wis +2 Cha -1

AC  16; Fort +7, Ref +5, Will +5

HP 20

Buck [R] DC 17

Speed 35 feet

Pack Attack The dog's Strikes deal 1d4 extra damage to creatures within the reach of at least two of the dog's allies.

Bestiary, page 102.