Fey corgis are naturally energetic creatures. They can focus this energy into an adorable, albeit occasionally lethal, pounce. If you have moved on four legs at least 15 feet in a straight line to a target, you can make a melee attack using your Dexterity ability modifier and your proficiency bonus. This deals 2d4 bludgeoning damage, which is increased to 4d4 at 5th level, 6d4 at 11th level, and 8d4 at 17th level. 

Your Charisma score increases by 2.

Fey corgis have a longer lifespan than most dogs. They are fully mature by the age of 10, and can live to be 300. 

Fey corgi are more often than not Chaotic, and they lean toward the Good side. However, Unseelie fey corgis (see "subraces" below). 

Fey corgis range from under 2 feet to over 3 feet. You are a Small creature.

Your base walking speed is 25 feet, however if you are carrying nothing in your hands, you can use a free action to drop to a four legged sprint. Doing this increases your walking speed to 40 feet, however while doing this you cannot perform somatic spell components. You must choose whether or not you are walking with two or four legs at the beginning of your turn.

You can see in dim light within 30 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.

When making Perception checks that require smelling or hearing, you have advantage. 

You have advantage on saving throws against being charmed.

You can speak, read, and write Common and Sylvan.