Kitten Tries To Keep Up With Dog Who Can't. Stop. Playing.

Kittens and puppies typically have tons of energy as compared to their older counterparts. All they want to do is play, constantly, while more mature cats and dogs prefer a more relaxed lifestyle.

This adult dog and kitten duo, however, turns the whole dynamic on its head.

The greyhound dog in the video below really, REALLY wants to play, and his little kitten best friend has severely underestimated how much effort it's going to take to keep up with him.

This dog is playing at full speed, and the tiny kitten is doing her best to get on his level. She falters sometimes, but ultimately, she's a pretty good contender.

The real question is: Where does this dog get his energy from?

The world may never know.