[He takes that silence as approval, but he’s extremely hesitant about continuing. At least he manages to stop shaking enough to finally get his hat back on.]

R-right, ok. I should just.. uh, start from the top, then. [Deep breath, Scotty boy.] I... am not a little boy. I’m a dog!

[He chokes on a sob, suddenly getting very emotional. The chance that someone would catch on to his secret was always a distant possibility, but now that it’s here, he’s struck by the fear of what’s going to happen next. He knows one thing for sure: He’s totally blown it with his new best friend.]

I’m just a dirty, mangy mutt! My name isn’t even Scott, it’s Spot! Here, see for yourself! [He reaches down the back of his shirt to undo his dog collar and toss it to Dipper. By this point he’s broken down to the point of crying, and his gestures have only become more dramatic and theatrical.]

But what choice did I have!? Is it so wrong to want to be something more out of life, huh?! To get an education? Why should humans get to experience the fullness of life while I have to stay home and play fetch? Oh, fate is a cruel-hearted tyrant!