Due to the worg's savage nature, your Strength score is increased by 2. Your Dexterity, and Constitution scores are increased by 1. However, your Intelligence is reduced by 1, and your Charisma is reduced by 2.

Worgs have advantage on Wisdom (Perception) checks that rely on hearing or smell.

You can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You can’t discern color in darkness, only shades of gray.

Your fangs and claws are natural weapons. When attacking any creature within 5 ft. of you, you can perform a bite attack for damage equal to 2d6 + your modifier, or a claw attack for 1d4 + modifier. If the target is a creature, it must succeed on a DC 13 Strength saving throw or be knocked prone. Strength is your relevant ability for both these attacks (or Dexterity, IF appropriate to your class). Two claws, or claw-and-bite attacks can also be used with two-weapon fighting style, with bonuses added to both attacks.

At 3rd level, your Bite and Claw attacks are counted as magical for the purposes of overcoming resistances and immunity to non-magical attacks and damage.

As a quadruped, you simply don't have the same anatomy as that of a humanoid. As such, you must have custom armor made for your frame. The cost of buying or modifying light armor is increased by 15%, medium armor by 30%, and heavy armor by 50%. Starting armor is considered to have been already modified, at no increased initial cost.

Obviously, a worg cannot use a shield.

Due to your lupine body, you are unable to wield melee and ranged weapons. Furthermore, whenever you attempt an action with your paws that requires fine motor skills, you do so with Disadvantage. This also applies to the manipulation of material spell components, that cannot be substituted with a worn spell focus, and it will require a Dexterity check at Disadvantage to perform the spell.

Due to your predatory nature, you are proficient in the Athletics, Intimidation, and Perception skills.

When on all fours, a typical worg stands between 3-4 feet tall at the shoulder, with a body 5-6 feet in length, and weighs between 350-450 lbs. Your size is Large.

You are basically a wolf, the size of a pony. Your base movement is 50 feet.

Worgs are capable of speech, and speak their own language, in addition to Common, and Goblin. Depending on background, a worg may have learned to read, though any writing that isn't scratching in the dirt will require a Dexterity check, at Disadvantage.

Worgs that live in packs, or are raised by goblins, tend to be Neutral Evil, while lone worgs often lean toward chaotic and neutral alignments. Good-aligned worgs, while possible, are virtually unheard of.

Like wolves, worgs reach maturity around age 3. Unlike wolves, a worg can live up to about 20 years in the wild, though one raised in a more civilized environment could possibly live to see 40 or more years.

Your thick hide gives you a natural Armor Class of 12. You obviously cannot use a shield and still gain this benefit, since you are a quadruped, and have no opposable thumbs!