As cats (usually) have a grace to them, dexterity score increases by 1.

Who can resist that cute little face? Charisma score increase by 2. 

Keen feline senses are perfect for a night of hunting and prowling. Darkvision as if it were dim light, and dim light as if it were bright light up to 60 feet. 

The ability to scale walls and other tall objects like they are normal terrain, light on your feet. Ignore difficult terrain and climb walls with normal speed. 

You gain proficiency in the Acrobatics skill and jump distance is doubled. 

Gain proficiency in the persuasion, deception, and performance skills. After all, what harm could this little guy possibly do?

Your claws can really sting! 1d6+ Strength modifier

Use those teeth only as a last resort... or if you get annoyed by some guy. 1d4 + Strength modifier for damage.