n large animal 

Perception +6; low-light vision, scent (imprecise) 30 feet

Skills Athletics +7, Intimidation +5, Survival +4

Str +4 Dex +3 Con +4 Int -5 Wis +1 Cha +2

AC  16; Fort +9, Ref +6, Will +4

HP 25

Pungent Aura (aura, olfactory) 10 feet. Creatures other than yzobus or hobgoblins that enter or start their turn in the yzobu's aura must succeed at a DC 14 Fortitude save or become sickened 1, or sickened 2 on a critical failure. A creature that succeeds at its save is temporarily immune for 1 minute.

Speed 30 feet

Melee [>] horn +7, Damage 1d6+4 piercing

Melee [>] hoof +7 (agile), Damage 1d4+4 bludgeoning

Bestiary 3, page 300.