n medium animal 

Perception +6; low-light vision

Skills Acrobatics +4, Athletics +5, Stealth +4, Survival +6

Str +3 Dex +2 Con +2 Int -5 Wis +2 Cha +0

AC  16; Fort +6, Ref +6, Will +4

HP 15

Speed 30 feet; nimble stride

Melee [>] hoof +7, Damage 1d6+3 bludgeoning

Melee [>] horn +7 (agile), Damage 1d4+3 piercing

Nimble Stride Rams ignore difficult terrain caused by narrow ledges.

Ram Charge [>>] The ram Strides twice in a straight line and then makes a horn Strike with a +1 circumstance bonus to its attack roll.

Bestiary 3, page 212.