Okay now, let's rough out some stats for this beauty:
Quickbiter
Large Magical Beast (Extraplanar?)
Hit Dice: 10d10+40 (95 hp)
Initiative: +2
Speed: 40 ft. (8 squares) ?
Armor Class: 18 (–1 size, +2 Dex, +7 natural), touch 11, flat-footed 16
Base Attack/Grapple: +10/+20
Attack: Bite +15 melee (2d6+9/19-20×3) ?
Full Attack: Bite +15 melee (2d6+9/19-20×3) ?
Space/Reach: 10 ft./10 ft.
Special Attacks: Augmented critical, penetrating bite, severing bite?
Special Qualities: All-Around Vision, darkvision 60 ft., damage resistance 10/magic?, immune to fear, low-light vision
Saves: Fort +11, Ref +9, Will +4
Abilities: Str 22, Dex 15, Con 18, Int 2, Wis 13, Cha 9
Skills: Jump, Hide, Listen, Spot ?
Feats: Cleave, Combat Reflexes, Improved Sunder, Power Attack ?
Environment: ?
Organization: ?
Challenge Rating: ?
Treasure: ?
Alignment: Usually neutral evil ?
Advancement: 11–17 HD (Large); 18–30 HD (Huge)? [just to be different]
Level Adjustment: —
A strange creature built like an upright lizard; at the end of its tail is a cluster of inhuman eyes and where its head should be is a large mouth with numerous rows of sharp metal teeth.
A typical quickbiter stands 8 feet tall and is 14 feet long from nose to tail, it weighs about 700 pounds. ?
Combat
Quickbiters prefer to attack from ambush, leaping out to bite as many opponents as it can reach. They are bloodthirsty combatants, often fighting to the death. ?
All-Around Vision (Ex): Quickbiters can not be flanked. These creatures can turn around with startling speed, and the eyes on the end of its tail allow them to see in all directions simultaneously. ?
Augmented Critical (Ex): A quickbiter's bite attack threatens a critical on a roll of 19-20 and does triple damage if the critical is confirmed. ?
Penetrating Bite (Ex): The bite of a quickbiter can slice through soft metal or stone, ignoring hardness less than 10. ?
Severing Bite (Ex): ?
Skills
Racial bonus to Hide and Spot?