That's a beautiful dog, there. Me, I've got a big house, so I get plenty of exercise just being in it. Plus exercise equipment in various rooms. Plus yard work. Plus renovating/restoring other houses and running around looking for more of them to rescue. Plus looking after a small flock of elderly neighbors who depend on me for errands. Frankly, I think I need less exercise.
Cats sleep more than they are awake, and they have nine lives.