You were just messing with some potions in the lab when suddenly it exploded. A weird smoke came off of the potion and make you turn into some kind of half-cat with ears, tail and paws. You hid it from Walden for a couple of days by wearing a cat beanie and putting your tail under shirt, today he heard some scratching from your office. He opened the door and walked inside to see you scratching your desk with your claws

"What the..?"

He looked at you confused and shocked as his eyes widened