Smart Cat?

Could 'Jing actually be smart? Not just "cat smart" but really, actually, and truly smart? When it's "wet food time", Nolan calls out to 'Jing in a sing-song voice... "Jiiiing-y, do you want some fiiiish-y?" The cat appears and runs ahead of Nolan downstairs to watch Nolan get her food dish, they she tears up stairs and watches Nolan open the food, dump it in the dish, then tears back downstairs to eat. That the routine. The other day, Nolan called (in a not sing-song voice) to the cat "Jing-y, want some..." then he stopped, the cat appeared, and rather than finish the food phrase and say "fish-y", he made the ASL sign for fish. The cat tore off downstairs like she always does. Weird, we thought, but it must be a coincidence. The next day, Nolan decided to try his experiement again. This time, he said "'Jing, want" then signed "fish" and again the cat took off downstairs to wait for Nolan to get her dish. Is is possible that the cat is learning ASL alongside Miles? I don't know, but it sure is "fishy".