Kitlers are cats that look like Hitler.
Most cats possess that typically feline facial expression that implies a secret longing for world domination. All cats want to rule the world, that’s part of the nature of the species, but to be a genuine Kitler there has to be some other similarity with the notorious German dictator. We’re looking for that tiny, unfashionable moustache. Or does it even have the flock-of-seagulls hairdo? An evil glint in its eye?