You love the experience of walking Jonas as a dog. He's just like Ginny, except for the fact that he's Jonas! This dog who was a human minutes ago is your crowning achievement as an inventor. Even so, your itching to make absolutely sure your device will work a second time. You just don't know what you're going to do if you can't change Jonas back for some reason. In theory, there's only a 0.012% chance that you can't. Even under the reasonable assumption that changing this dog back into a human will be a success, it's too soon to say exactly how being a dog for long periods of time would affect the human mind. As much as you'd like to have a clone of Ginny for another week or so, the first test should be short. Maybe Jonas would agree to be your beagle again sometime?
"Okay, girl, let's head back," you say, giving Jonas time to mark that interesting hydrant on the way back. She seems to have stopped worrying to much about the fact that she's naked in public and that she's a female. You hope that's a good sign and not a bad one. You go ahead and get out a dog treat for her once you're inside, just like you usually do for Ginny. Jonas cocks her head to the side at first, wondering what to make of this new development. She steps forward cautiously and sniffs at the treat. She takes it up into her mouth and crunches it with her sharp teeth. Her tail wags. She looks up at you again as though asking for more.
"You can't eat whatever you want in a few minutes, Joe. Are you ready to see if you can change back?"
The beagle gives out a loud bark. You aren't sure if that's a yes or a no, but she follows you back down into the basement, so you assume it's a yes. She hops back up into the booth, tail wagging as you start to type in the data. Yep, it's definitely a yes. You have to admit your heart is pounding in your chest, even though you're aware that Jonas is overwhelming likely to be fine. The beagle's tail dives down between it's legs as the buzzing sound returns, so Jonas must be rather nervous, too. Both your fingers are crossed tight behind you're back as Jonas starts to glow again.