It's fairly easy to walk on two legs. You know, left leg forward then right leg forward. But when you have four legs like cats and dogs, things become much more complicated.
Cats move both their front leg and back leg forward on the left, and then their front leg and back leg forward at the same time on their right. And that's how they get along.
Dogs, on the other hand, move their rear leg forward on the left, then their front leg forward on the left. And then their rear leg forward on the right, and then their front leg forward on the right.
Well, you know, different strokes for different folks. I personally like the cat's walk better, because the cat moves its front and back legs forward at the same time.
For me the moral of the story is: WHEN YOU DO SOMETHING, DO IT ALL AT ONCE! But that's just me.
What do you think?