Then send it back. You have 45 days from delivery. You don't need to explain that your cat is being weird — we already assume that's possible, that's the whole reason we sell ten things and not nine hundred.
Email returns@settlein.shop, tell us the order number, and we'll send a prepaid label the same business day. We don't ask you to photograph the unused product. We don't ask you to defend the cat. The refund hits the original payment method within 5–7 business days of us receiving it.