BOZ
Creature Cataloguer
I think I will keep them at their original 11 HD. I will go with Filby & Morits' suggestions and make it a Fey rather than Monstrous Humanoid. And Mortis' assessment of 23 Str makes sense as well. The rest, as they say, is up for debate.
(not that I disagree with anything in particular that he wrote... just want to consider possibilities as usual).
Actaeon
Large Fey
Hit Dice: 11d6+X (X hp)
Initiative: +X
Speed: 40 ft (4 squares)
Armor Class: 17 (-1 size, +X Dex, +X natural), touch X, flat-footed X
Base Attack/Grapple: +6/+X
Attack: Spear +X melee (2d6+6/x3) or gore +X melee (2d8+6)
Full Attack: 2 spears? +X melee (2d6+6/x3) and gore +6 melee (2d8+X)
Space/Reach: 10 ft/10 ft
Special Attacks: Breath weapon, summoning
Special Qualities: Camouflage, low-light vision
Saves: Fort +X, Ref +X, Will +X
Abilities: Str 23, Dex X, Con X, Int 12, Wis X, Cha X
Skills: 98
Feats: 4
Environment: Temperate forest
Organization: Solitary
Challenge Rating: X
Treasure: X
Alignment: Usually neutral
Advancement: By character class
Level Adjustment: +X
The favored class should be Druid, with Ranger as a possible second choice, and Barbarian as even less likely.
I checked out the links to other conversions that Mortis posted. Including his suggestions above, we have some ideas to start with:
Dex ranges from 12-15; Con ranges from 12-16; Wis ranges from 12-15; and Cha ranges from 11-14.
I see one with a suggestion for Scent as an SQ.
Possible skills: Concentration, Handle Animal, Hide, Intimidate, Knowledge (nature), Listen, Move Silently, Search, Spot, Survival
Possible feats: Alertness, Cleave, Endurance, Great Cleave, Improved Initiative, Improved Natural Attack (Gore), Power Attack, Skill Focus (Knowledge [nature]), Track, Weapon Focus (spear)
Languages: Common, Sylvan, possibly the druidic language
Skill bonuses: possibly a Hide bonus (although maybe something like the ranger camouflage ability is more appropriate). Maybe some bonuses to Handle Animal, Move Silently (in woods), and Survival.

Actaeon
Large Fey
Hit Dice: 11d6+X (X hp)
Initiative: +X
Speed: 40 ft (4 squares)
Armor Class: 17 (-1 size, +X Dex, +X natural), touch X, flat-footed X
Base Attack/Grapple: +6/+X
Attack: Spear +X melee (2d6+6/x3) or gore +X melee (2d8+6)
Full Attack: 2 spears? +X melee (2d6+6/x3) and gore +6 melee (2d8+X)
Space/Reach: 10 ft/10 ft
Special Attacks: Breath weapon, summoning
Special Qualities: Camouflage, low-light vision
Saves: Fort +X, Ref +X, Will +X
Abilities: Str 23, Dex X, Con X, Int 12, Wis X, Cha X
Skills: 98
Feats: 4
Environment: Temperate forest
Organization: Solitary
Challenge Rating: X
Treasure: X
Alignment: Usually neutral
Advancement: By character class
Level Adjustment: +X
The favored class should be Druid, with Ranger as a possible second choice, and Barbarian as even less likely.
I checked out the links to other conversions that Mortis posted. Including his suggestions above, we have some ideas to start with:
Dex ranges from 12-15; Con ranges from 12-16; Wis ranges from 12-15; and Cha ranges from 11-14.
I see one with a suggestion for Scent as an SQ.
Possible skills: Concentration, Handle Animal, Hide, Intimidate, Knowledge (nature), Listen, Move Silently, Search, Spot, Survival
Possible feats: Alertness, Cleave, Endurance, Great Cleave, Improved Initiative, Improved Natural Attack (Gore), Power Attack, Skill Focus (Knowledge [nature]), Track, Weapon Focus (spear)
Languages: Common, Sylvan, possibly the druidic language
Skill bonuses: possibly a Hide bonus (although maybe something like the ranger camouflage ability is more appropriate). Maybe some bonuses to Handle Animal, Move Silently (in woods), and Survival.