"This is my weird son. He can't climb for shit, but he is handsome and strong."
Everything that isn't food is a cat from the perspective of a cat. Cats can look upon the true form of eldritch monstrosities and keep their sanity. They'd just see another cat. A fucking weird-looking cat, but a cat nonetheless.
"Those tentacles will take a lot of licking to keep clean, but it's nothing I haven't dealt with before. Hold still, kitten."