Shortsword is fine, and I will agree with a centaur-like Medium, but I'd make their actual size a bit on the smaller end in the flavor text.
Updating the
Ovinaur Working Draft.
Skills: they get 48 skill points, or 8 at the 6 max ranks. I guess I'd go with Balance, Climb, Concentration, Jump, Knowledge (religion), Listen, and Spot. Maybe Survival for the last one?
Let's see, we gave the Goatling ranks in Balance, Climb, Concentration, Diplomacy, Listen, Knowledge (religion), Knowledge (the planes), Knowledge (arcana), Spellcraft and Spot +4.
Ovinaurs are more "native" than Goatlings since they're part halfling so it makes sense dropping the Knowledge (the planes), but I'm wondering whether Knowledge (arcana) or Spellcraft makes any sense for them?
Also, ovinaurs are noted as being "very poor rope climbers". That's hard to represent in 3E.
Hmm… I guess we could have "An ovinaur has a -5 racial penalty to Climb checks when using a rope." That matches up with the 5-point DC progressions of Climb checks in the SRD. i.e. climbing a wall with a rope is normally DC 5, or DC 0 if the rope is knotted, but is one degree harder for an ovinaur.
So how about putting 6 ranks apiece in Balance, Climb, Concentration, Jump, Listen, Spot plus 3 ranks apiece in Knowledge (arcane), Knowledge (religion), Spellcraft and Survival?
Actually, I'm thinking a few ranks in Tumble might not be amiss. I'd be happy to either swap one of the 3-rank skills for Tumble or reduce Concentration, Listen & Spot to 5-ranks and add 3 ranks in Tumble.
i.e. one of the following:
Skill Ranks #1: Balance 6, Climb 6, Concentration 6, Jump 6, Knowledge (arcane) 3, Knowledge (religion) 3, Listen 6, Spot 6, Spellcraft 3, Survival 3
Skill Ranks #2A: Balance 6, Climb 6, Concentration 6, Jump 6, Knowledge (religion) 3, Listen 6, Spellcraft 3, Spot 6, Survival 3, Tumble 3
Skill Ranks #2B: Balance 6, Climb 6, Concentration 6, Jump 6, Knowledge (arcane) 3, Listen 6, Spellcraft 3, Spot 6, Survival 3, Tumble 3
Skill Ranks #2C: Balance 6, Climb 6, Concentration 6, Jump 6, Knowledge (arcane) 3, Knowledge (religion) 3, Listen 6, Spot 6, Survival 3, Tumble 3
Skill Ranks #2D: Balance 6, Climb 6, Concentration 6, Jump 6, Knowledge (arcane) 3, Knowledge (religion) 3, Listen 6, Spellcraft 3, Spot 6, Tumble 3
Skill Ranks #3: Balance 6, Climb 6, Concentration 5, Jump 6, Knowledge (arcane) 3, Knowledge (religion) 3, Listen 5, Spot 5, Spellcraft 3, Survival 3, Tumble 3
Hmm… upon reflection, I think we should give them some ranks in Hide and Move Silently since Halflings have those skills, plus they have racial bonuses in them.
They don't have much in the way of spells so we can spare some more ranks of Concentration. Also, the Goatling has 5 ranks in Balance, Climb, Listen and Spot plus a -1 Wisdom adjustment. If we give the Ovinaur 5 ranks in Balance & Climb and 4 in Listen & Spot it'll still have better Balance and alertness-skills because of its +1 Wisdom and Dexterity mods.
So how about:
Skill Ranks #4: Balance 5, Climb 5, Concentration 3, Hide 3, Jump 6, Knowledge (arcane) 3, Knowledge (religion) 3, Listen 4, Move Silently 3, Spot 4, Spellcraft 3, Survival 3, Tumble 3
Skills: An ovinaur has a +2 racial bonus to Hide and Move Silently checks and a +6 racial bonus to Jump checks. In addition, it can always choose to take 10 on Jump checks, and can use its Dexterity modifier on Jump checks if this is better than its Strength modifier.
An ovinaur has a -5 racial penalty to Climb checks when using a rope.