Cacklefiend Hyena
Large elemental beast
Level 7 Brute XP 300

Initiative +5        Senses Perception +11; low-light vision
HP 96; Bloodied 48
AC 19; Fortitude 20, Reflex 17, Will 18
Resist 20 acid
Speed 8

(⚔) Bite (standard, at-will) ✦ Acid

+10 vs AC; 1d6+5 damage, and ongoing 5 acid damage (save ends).

ᗕ Fiendish Cackle (standard, at-will) ✦ Fear

Close burst 3; targets enemies; deafened creatures are immune; +8 vs Will; the target takes a -2 penalty to attack rolls until the end of the cacklefiend hyena's next turn.

ᗕ Acid Bloodspurt (immediate reaction, when first bloodied, encounter) ✦ Acid

Close burst 1; +8 vs or (whichever is lower); 2d8 damage.. automatic hit; 2d8 acid damage, and ongoing 5 acid damage (save ends).

Pack Attack

A cacklefiend hyena deals an extra 1d6 damage against an enemy adjacent to two or more of the cacklefiend hyena's allies.

Harrier

If a cacklefiend hyena is adjacent to an enemy, all other creatures have combat advantage against that enemy when making melee attacks.

Alignment Chaotic evil        Languages Abyssal, Common
Str 20 (+8)      Dex 14 (+5)      Wis 14 (+5)
Con 16 (+6)      Int 6 (+1)      Cha 10 (+3)

Published in Monster Manual, page(s) 166, Dungeon Magazine 159, page(s) 84.