Not to be overly observational or Seinfeldian, but: Why do they call it doggy-style"?
Don't cats use it, too?
In fact, I can't think of a single animal that uses any other sexual position-they all use doggy style!
Now, why is that, I wonder? I guess it's better that way.
I think some sex positions of ours and their pleasure and specialness would be kind of ruined if any animals started using them, too!
I only hope they never do!