Fair enough. Roar was just a suggestion. I think it's robust enough without it. Unless Shade and/or freyar are in favor...?
Sarkastodon, v2
Large Animal
Hit Dice: 15d8+75 (142 hp)
Initiative: +1
Speed: 40 ft. (8 squares)
Armor Class: 17 (-1 size, +1 Dex, +7 natural), touch 10, flat-footed 16
Base Attack/Grapple: +11/+26
Attack: Bite +21 melee (1d12+16)
Full Attack: Bite +21 melee (1d12+16)
Space/Reach: 10 ft./5 ft.
Special Attacks: Bonecrushing bite, trip
Special Qualities: Dire, low-light vision, scent
Saves: Fort +14, Ref +10, Will +10
Abilities: Str 33, Dex 13, Con 21, Int 2, Wis 12, Cha 10
Skills: 18 points
Feats: 6
Environment: Temperate plains
Organization: Solitary or pair
Challenge Rating: x
Treasure: None
Alignment: Always neutral
Advancement: x
Level Adjustment: -
This brown-furred predatory beast is nearly the size of a rhinoceros. It resembles a melding of bear and cat, with a leonine face and a bear-like body terminating in a long, furry tail.
Although it superficially resembles a bear or cat, Sarkastodon is a creodont, a seperate lineage of carnivorous mammal. One of the largest carnivorous mammals ever to live, Sarkastodon specializes on hunting enormous prey, such as brontotheres and Indricotherium. Its bite can crush bone and its stomach is acidic enough to digest it, leaving little left for the scavengers.
A sarkastodon is 10 feet long (excluding the tail, which is about one-half to two-thirds as long as the body) and 6 feet tall at the shoulder, weighing around 1-½ tons.
Combat
A sarkastodon begins combat from ambush, pulling prey to the ground with trip and beginning to eat while its prey still lives.
Bonecrushing Bite (Ex): Sarkastodon's jaws are immensely powerful, and can crush bone to pulp. On a successful critical hit, a Sarkastodon also deals 1d4 points of Str damage
Trip (Ex): A sarkastodon that hits with a bite attack can attempt to trip its opponent (+16 check modifier) as a free action without making a touch attack or provoking an attack of opportunity. If the attempt fails, the opponent cannot react to trip the sarkastodon.)
Skills: A sarkastodon has a +4 racial bonus on all Hide and Move Silently checks.
I set bite damage at 1d12 because it's what the 1e version had, plus d12s don't get enough love. I suggest we split the skill points among Hide, Move Silently, Listen and Spot, perhaps with Hide and Move Silently getting 4 points and Listen and Spot 3.
Feat suggestions: Alertness, Improved Critical (bite), Improved Initiative, Power Attack, Stealthy, Weapon Focus (bite)