This is why it's just better to ask cats what they want instead of surprising them with gifts.

When Philo the Cat's owner got him this new cat door, he reacted like I did after I turned 13 and a waiter would still give me a children's menu. "EXCUSE ME," I always wanted to yell, "I AM TOO ADULT FOR A CHILDREN'S MENU." But instead of saying anything, I just resigned myself to ordering off of the adult menu and hoping the waiter understood his heinous error. Similarly, Philo the Cat doesn't complain the cat door that he doesn't need. Instead, he quietly shows that he's too human for a cat door. We get it, Philo: no more cat doors for you.

Sources: Philo Cat on YouTube