Scout's memory tells you to jump up and lick Marcus' face. While you allow Scout's instincts to take over most of your activities at the moment so you react naturally, you really can't bring yourself to lick a stranger's face, even if you are inhabiting the body of his dog. Instead, you just patter around him, trying to act happy and excited at the idea of going for a walk.
Marcus doesn't seem to notice anything odd, so you follow him, relieved, as you leave the house and trot down the street. It's a unique experience, looking at your familiar neighborhood from the eye-level of a dog. But beyond the sights, there are a host of sensory experiences you could never have as a human. All sorts of scents and sounds are assailing you, but Scout's memory helps you keep them in order, filing away the familiar ones and taking note of new ones.
As you pass by a large tree, you cannot help but stop and take a sniff. It is obvious dozens of dogs have passed by this place and left their mark, and you cannot help but feel the urge to do so as well. Marcus waits as you inspect the tree, obviously familiar with your routine in this place. However, the notion of using the bathroom in public is something that you can't wrap your head around, even if you are in a dog's body. Nevertheless, it would be a little odd if you just walk by. Finally, you release control and let Scout's instincts take over, spectating as your dog body lifts its leg and marks its territory rather matter-of-factly.
Although you want to tuck Scout's tail between his legs in embarrassment, you remind yourself you are just along for the ride, and it's not actually you completing these actions. However, you suddenly realize you are in for a new round of mortification once you reach Marcus' goal, the dog park. He lets you off leash with a "Go have fun, boy," and suddenly you are face to face with a pack of dogs of various sizes and breeds.
Who all want to smell Scout's butt. And not just that. To be a social dog, you know from Scout's memories that you need to greet the other dogs by sniffing their behinds as well. Suddenly, you are regretting choosing a dog as your ride-along. At least cats didn't sniff each others butts on greeting, did they? Wondering if you should just give up, you look around for any possible ideas for another target.