A Natural Indifference?

I can't tell the difference between: squirrels and chipmunks, turtles and tortoises, a wolves and coyotes, sea cows and manatees, alligators and crocodiles, newts and salamanders, frogs and toads, dolphins and porpoises, Rays and Skates, Eels and Sea Snakes, and most of the great cats when they are colored black, like black panthers and jaguars. Can you?

For that matter, there's also Debbie Gibson and Tiffany, Equal and Sweet & Low, V for Vendetta and Z for Zorro, Cedric the Entertainer and Bernie Mac, Roseanne and Rosie, Julia Styles and Erika Christensen, Deep Impact and Armageddon, and metros and the brand-concious (esp. those that think there is a fundamental difference between Nissan & Infiniti, Toyota & Lexus, and Acura & Honda other than price).