All of the cat skins are just champions in cat onsies; All of the dog skins are actual dogs.

It would have been nice to get skins that actual turn the champion into a cat. Would work for Gnar or Teemo. Even just one skin that's actually a cat would have made it seem more like Cats vs Dogs than Cat Onsies vs Dogs.

edit: okay for all you "UMM TECHNICALLY....!" I'll say it like this: All dog skins (Fizz, Corki, Kog'maw) incorporate an actual dog (Spaniel, Corgi, Pug) into their player model. Two cat skins have cats in their abilities but no cat skin turns a champion into a cat. Rengar is a vastaya.

Thx for coming to my ted talk