I have not got much time. However, I do have some fresh science for ya.
Ever wonder how cats are able to be so sneaktastic?
Figure 1: A sneaky cat.
Cats apparently make trade-offs between energy efficiency and sneakiness. Cat's sneaky gaits are less efficient, whereas distance-traveling animals like dogs have a higher efficiency. Bishop, Pai, and Schmidt will tell ya: "Low energy recovery was not associated with decreased vertical oscillations of the center of mass as theoretically predicted, but rather with posture and footfall pattern on the phase relationship between potential and kinetic energy."
As I may have mentioned, I don't have much time so I'm not going into a deep analysis. But... but... but... SNEAKY KITTIES! Go read. :)