Rothe, Surface (CR 2)

Large Magical Beast
Alignment: Always neutral
Initiative: +1 (Dex); Senses: darkvision 60 ft., Listen +6, and Spot +4

AC: 13 (-1 size, +1 Dex, +3 natural), touch 10, flat-footed 12
Hit Dice: 3d10+9 (21 hp)
Fort +6, Ref +4, Will +1
Speed: 40 ft.
Space: 10 ft./5 ft.
Base Attack +3; Grapple +11
Attack: Bite +6 melee; 2 horns +1 melee
Full Attack: Bite +6 melee; 2 horns +1 melee
Damage: Bite 1d8+4; horns 1d4+2.
Special Attacks/Actions: Stampede
Abilities: Str 18, Dex 12, Con 16, Int 1, Wis 11, Cha 9
Special Qualities: resist enchantment
Feats: Alertness; Power Attack
Skills: Listen +6 and Spot +4
Advancement: 4-6 HD (Large)
Climate/Terrain: Any cold land
Organization: Herd (11-20)
Treasure/Possessions: None

Source: Forgotten Realms Campaign Setting

Stampede (Ex): Panicked rothé first attempt to break free of creatures who are harrying or herding them by outrunning them as a herd. If this is impossible, the rothé turn to face their opponents and charge in a solid wedge of packed flesh. They run over anything of their own size or smaller, dealing 1d12 damage for each rothé in the stampede.

Resist Enchantment (Ex): Each rothé has a mind of such determination that it gains a +4 racial saving throw bonus against Enchantment spells and effects.